Hydrangea Early Evolution - The World's Earliest Flowering Panicle Hydrangea
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- čas přidán 12. 09. 2024
- Join David in our Nursery and find out all about this amazing very early flowering panicle hydrangea.
Taking all the hardiness, reliability, pristine beauty and ease of culture of PG hydrangeas and combining all that into a small, compact and EARLY FLOWERING shrub, here's a little beauty that will fit in perfectly in all sorts of gardens from small intimate settings and border edges to large open beds, banks and winding driveways.
Hydrangea paniculata ‘AJ14’ PP#30,983
How great that we’re seeing lots more compact hydrangeas, loved the combination in the planter. FYI Dave, I click the like button even before I look at the video, you never disappoint, always informative and beautiful plants to look at.
Thank you, that brings on a big smile!
I can listen to David talk about plants all day long. I love these videos!
Thank you that is very kind of you to so.
And guess what...
I could talk all day about them.... so stay tuned
Thank you again. Your smile and videos are not only informative but YOU are so joyful and uplifting. I love hearing the history of these beautiful hybrids. This one is now on my buy list. Can not wait and extremely excited to get a few. Improvements in hydrangeas in the past decade are so dramatic and mind boggling. Hydrangeas are the perfect plant and the choices are incredible now!
Absolutely, these break throughs in breeding are tremendous. and there's lots more coming..... so save some space!
Thanks for for your kind comments, it is nice to see you are appreciating our efforts.
Hi! I love them. Their petals remind me of butterflies fluttering about 🥰 Such a lovely addition! Thank you, David 🙌
Yes, they are really cute and totally different.
I love that you showed the combination planter with the ajuga. I would have never thought of that but it is beautiful!
Glad you liked it!
There's all sorts of possible companions, it is up to us to be visionary and creative....., that's the stuff that often makes a good garden - GREAT!
How could you do this to me David??? Another wonderful shrub to add to my never ending list of 'I wants' 😆😉😆This looks like an amazing Hydrangea, especially with the Ajuga in that container! Thanks for showcasing this new shrub!
Its our pleasure......
Glad you enjoyed seeing (and knowing about it), it is a good example of how the world's best plant breeders are bringing us ever more exciting new selections, so that together the best of the historical "tried and true" performers we have a terrific opportunity to enjoy our gardens like never before.
This is exactly what I want for my front border! Beautiful plant! Stunning in the pot with ajuga!
Yes, it is exciting. We are delighted to hear you.like it too.
I bought this Early Evolution hydrangea and the flowers on this hydrangea are the definition of love. With the hint of blush light pink.
It lives in a pot . I am in zone 6b it has lots of shoots..
Thank you, that is great to hear.
We have found that that it works well in pots in our Zone 6 & 7 trials too.
Just be aware that because this is so-o-o-o NEW! You are amongst a precious few to have and enjoy this plant! 😉😁👍
Most people (including a lot of garden centers), don't even know about it yet. So, well done in making a discerning and EXCELLENT choice, it should be even better this year and of course start flowering... way before other sorts. 👏😃💚
Always a pleasure watching David's vids...
Thanks Dave, Good to hear from you.
Hope you are doing well.
How wonderful to get the best of all traits ! I cannot wait until I am able to obtain one to add to my hydrangea collection! 🌸🇨🇦
It will make a great, early (and compact) start to your hydrangea displays.
I’ve been a subscriber for a while now and I always click the like button first thing🙌. I love your videos for the beautiful flowers and for all of the information you provide. Plus I a, also in the Northeast ( Long Island) so all of the information is relevant. Such a beautiful hydrangea, I will have my eye out for this cutie💚🤩
Great. It is so new that most people won't know about it yet. So when you are talking to friends and our garden center partners on Long Island (and elsewhere): grownbyoverdevest.com/retail-locator/ you are probably going to have to explain it's name and unique characteristics. Thank you again for your kind comments and support.
I am bringing a screenshot of the plant from your channel 😂, I’m going prepared this weekend. You’re very welcome, love your channel 🙌
This hydrangea is absolutely gorgeous! Love all the info on them and hope I can get my hands on some
As you can probably tell, we are very fond of it too. Nice big, premium sized plants will be in some of our partnering garden centers this coming late spring and early summer. Here's a link that will help you discover where they are all located: grownbyoverdevest.com/retail-locator/
Just be aware that not every place will be carrying them, so we suggest calling ahead to check it they are going to be in stock.
Thank you for introducing me to this unique shrub. It has so many winning qualities.
You are very welcome, it is exciting to introduce it to you and let you have all the information we currently know about it.
Like all new plants it is still under review and has to be tested over time, so when everyone get a chance to grow and enjoy it in their neighborhoods, it will be helpful to keep updating the information. Meanwhile, it certainly is a unique selection that presents a lot of promise.
I just love all the historical and genetic info that you provide. I saw this Early Evolution in a video of John Lords Secret Garden. It was at least 5 feet tall. Maybe more. Beautiful creamy pink tinged color.
Thanks, we find this stuff interesting (and often helpful and revealing). It is nice to hear you are finding it interesting too. Thanks for letting us know.
Lacecaps are my favorite, so I'm thrilled with the flowers on this plant even though it's not classified as such. I absolutely love hydrangeas, but sadly so do the many deer who pass pass through my yard multiple times each day. They eat many plants that are classified as deer-resistant even though there is no shortage of natural grazing spots in my area. I think deer view yards with lovely landscaping the same way we view fast food.....convenient and easily accessible. They can't pass it up. :-( Love your videos! Appreciate the huge amount of time you invest in making them!
That's a good explanation for deer preferences. It is annoying and soul destroying to see plants browsed. Our English Springer Spaniels, fishing line, heavily scented soap and laundry fabric softening strips, all work well, but it is still annoying to see them browse on our precious plants Grrrrr!
I just found this channel, and I tell you, Mr. David is soooo sweet! I love listening to him explain things! I have a new information source for my Landscape Design business and I thoroughly enjoy his videos. I'll be watching from now on! Zone 7B, Northern Alabama
Welcome and thanks for the kind comments, it is great to know that you are finding our efforts helpful. Please consider clicking the "like" icon on any of our videos that you consider worthy because that will help other people find the information too.
Again, thank you for introducing another beautiful plant. It’s going on my list!
You are very welcome!
It is wonderful to be able to introduce them to you and have them so very well appreciated!
Just picked up three of these! So excited to see them grow in their new home =)
Wonderful, you are in for a real treat! 😉👏😂
Don't forget to keep us updated on your progress and make sure to show them off to all your gardening friends too, because they really are very special.
And, because it is so new (many people don't even know about it yet), you are amongst some of the first in the US to have it.... So, congratulations!
Have you considered subscribing to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Finally, now that our partnering garden centers: grownbyoverdevest.com/retail-locator/ are fully stocked with fresh new plants, if you live in our Mid-Atlantic and Northeastern region be sure to stop in and take a look…. Because that’s where you will discover all sorts of beautiful, tried and true and cutting edge, top performing selections like this one.
I can't wait to see these in Canada! Just beautiful. You should send some to Laura at Garden Answer to plant in her South Garden. Thanks for a delightful video. Donna
It's probably only a matter of time until the Canadian garden centers have them. Our friends at Sheridan Nurseries in Ontario would probably be a good place to check with.
@@OverdevestNurseries nope. I checked and even this year I was told they will not be carrying EE.
Wow! Yes, please!
It is amazing!
Amazing I love it ❤️
I loki most the white color of it super lush❤️❤️❤️
Thank you. It is totally different and looks nothing like its later and larger flowering "cousins"! A great way to start off the seasons of color.
Wow! I’m so impressed by Early Evolution. I wish Early evolution would be possible to buy here in Iceland, I tried Limelight, but it’s flowers are too big and can’t take the windy weather here, it also blooms too late for our short summers.
Thank you, that's an interesting proposition and one that makes total sense. Since it flowers so early, stays compact, and has lovely, small, yet very showy (and long lasting) flowers it should be perfect for Northern areas with short growing seasons.
I have passed on your thoughts and request to the people who are responsible for its introduction in Europe.
Don't forget to keep us all updated on your progress, once you get it growing in your lovely country.
I'm so excited 😊
Wonderful. It is fun, testing and trialing and then bringing you the information on all these outstanding, new and exciting selections. Stay tuned..... there's lots MORE coming.
I cannot wait to get one.
Great, just be aware that it is so new that not everyone knows about it yet, so you are probably going to have to ask around. Here's a link that will help you find the locations of all the partnering garden centers that would be a starting point: grownbyoverdevest.com/retail-locator/
for people wanting Hydrangea EE in Canada, there are nurseries in BC who sells them
Thank you for helping out our Canadian friends
Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Finally, now that our partnering garden centers: grownbyoverdevest.com/retail-locator/ are fully stocked with fresh new plants, if you live in our Mid-Atlantic and Northeastern region be sure to stop in and take a look…. Because that’s where you will discover all sorts of beautiful, tried and true and cutting edge, top performing selections.
Thank you kindly
You are very welcome. It is rather special, and a wonderful way to bring an early round of flower color to our panicle hydrangeas
@@OverdevestNurseries Thank you for your reply! I can’t get them anywhere just wondering can you recommend anyone in the states that will mail 2 to me? Thank you
I want 20 of those❤❤❤❤❤
Thank you, it's very special and will make a big impact in your garden, especially if you mass them together or plant them in a line, say alongside a driveway or as a low seasonal hedge.
Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Finally, now that the cooler weather of Fall arrives, it brings with it the BEST TIME of PLANTING and since our partnering garden centers: grownbyoverdevest.com/retail-locator/ are continuing to bring in stocks of gorgeous plants, if you live in our Mid-Atlantic and Northeastern region be sure to stop in and take a look…. Because that’s where you will discover all sorts of beautiful, tried and true and cutting edge, top performing selections.
Wow.... gorgeous, must have! Thank you David, and does your nursery ship to Ohio? Such an amazing plant
We work with some partnering garden centers in Western PA and a few in eastern OH, here's a link that will help you find the locations: grownbyoverdevest.com/retail-locator/
@@OverdevestNurseries truly appreciate it
My first time to plant limelight hydrangea so far their healthy. Zone 8a
Great, it is a well tried and really beautiful variety. Now you'll have to look into considering some of the earlier, smaller growing and later coloring up types. Lots to enjoy.
Does this even bloom earlier than quick fire fab? Love all your videos. Thanks!
Yes, typically with us, it flowers about 2 weeks earlier. And, we really like the compact habit and different type of flowers too.
We've been growing (and testing it) now for several years, and every year it just gets better and better - we think you will really enjoy having it too.
Have you subscribed to our channel?
If you haven't, you might like to think about it, because once you are subscribed, each time we post a new video (which we are doing all the time), you will find that they will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that will help other people find out about the information as well.
And, now that we are in the midst of the main planting season (spring through late Fall) try to visit our partnering garden centers: grownbyoverdevest.com/retail-locator/.
They are located all over our Mid-Atlantic and Northeastern region, and that's where you will find all sorts of beautiful, tried and true and cutting edge, top performing selections, so be sure to stop in regularly throughout the seasons because there will be a steady stream of fresh shipments coming in weekly.
I am very excited to have learned about this new hydrangea and I am thinking about putting a couple of them in my garden. Can you tell me how they react to winter temperatures and if they need a lot of water. Many thanks.
It is great to hear you found this exciting new selection interesting.
We distribute our plants through our network of partnering garden centers: grownbyoverdevest.com/retail-locator/ so, if you contact some of them they can probably help you get hold of it and lots of many other REALLY GREAT plants too.
As for hardiness, here's a link to our website that shows that is is (at least) hardy to Zone 5 and above: grownbyoverdevest.com/plant/early-evolution-panicle-hydrangea/
Once planted, it (like all other recently planted specimens) will require regular watering until it gets established, but not any more or less than any of the other beautiful panicle hydrangeas.
@@OverdevestNurseries thank you for your quick response. I appreciate it
Absolutely beautiful. Can I get them in the Dallas, Texas area?
It is very new and therefore limited in availability (including of course, our partnering garden centers: grownbyoverdevest.com/retail-locator/). No doubt (in time) as it becomes better known about, it will be stocked by garden centers almost everywhere.
Mr Wilson, I live in La in zone 8. What hydrangeas grow well
here?
I have recently started following you and you are a wealth of info.. last year I bought 4 panicle hydrangeas and 2 died. So far this year I bought 2 Little Limes, a Limelight, and a Limelight Prime. I won’t give up but would love to know your recommendations for my area.
Thanks so much.
Thank you for your support, it is great to hear you are finding our efforts interesting and helpful. Our experiences are all based here in the Mid-Atlantic and Northeastern States region, so we are not totally aware of the exact intricacies of your area. That's why we are strong advocates of local, neighborhood garden centers and nurseries. They are a wealth of information and we would suggest you tap into the best of them for local specialized information and guidance. Often the owners and experts live (and garden) in your same neighborhood (often even for several generations), so visit frequently, and get to know them, they are a terrific resource. The Panicle Hydrangeas you mention are remarkably adaptable, accommodating and very beautiful, so its sounds like you are on the right track. Stay tuned, because there's lots of really great selections coming, that I think you will appreciate knowing about and perhaps trying.
I have Hydrangeas that get growth on the old branches, can I cut the tops off where there is not new growth on it! I have bare branches sticking up.
If you have bare branches (at this time of year), that growth can be trimmed back to live shoots.
Hi- I see that this video is over a year old, so hopefully you have gotten more experience with these. I bought one over this weekend. I left it on my porch so I could plant it. To my horror, it seems to be a fly magnet! Big old black house flies all over! I sprayed it with neem oil, but it was $60 on sale and I am concerned that I will be fighting flies all the time. I live in Texas and a hot summer in a garden with flies is not appealing to me. Before I return the plant, I was wondering if you have since encountered the problems and how you dealt with it. As a comparison, I have successfully raised 12 mop head, big leaf, Endless Summer and Oakleafs and have never seen the flies be an issue. According to google, some hydrangeas do attract flies
Thanks for taking the trouble to reach out to us.
In our time (which now extends to at least 5 years) growing this variety, we've never seen anything like you describe. In fact, during this time, our appreciation for it's considerable merits has just become stronger and stronger! It is without a shadow o of a doubt, an excellent plant that we have tested and trialed extensively and consider well worth growing.
It's a natural (and indeed desirable) thing to see pollinating insects visiting on our plants, so we like to encourage everyone to plant more plants that provide habitats for our valuable pollinators and help the environment generally, and your other hydrangea plants are a good example of that.
It sounds like there's something strange going on here, an anomaly that we suspect is more connected with the individual growing history of the plant rather than the genetics of the variety.
Obviously, we are unable to speculate or diagnose the issue without seeing and examining the specimen (maybe this is something your local extension office can assist with), but it leaves us wondering if there's something on or in the pot or in the compost that attracts these flies.
Some organic based compost materials can by their very nature can become habitats and food sources for animals and insects, so that might be something to consider.
Which leads us to the point that purchasing plants from reliable, trusted sources is very important and sometimes plants that appear to be a bargain in a sale or marked down, can actually wind up to be very expensive - especially if the condition of the plant is less than in a healthy, vigorous condition.
They are usually ailing for a reason, and that is often not evident at the time of purchase!
If you were talking to David he would tell you, that some of the worst problems that he battles with in his garden, came in on plants that appeared to be a good deal at the time!
So, we suggest you take a look at the pot and the compost, perhaps visit your local extension office and maybe make a trip to a reputable retailer that stocks top notch plants and backs it up with good service and information. And yes, maybe pay a bit extra... but know that good healthy, well-grown plants will grow and reward you with years and years of pleasure, so in the long run they will usually prove to be the best investment.
We sincerely hope this helps.
Finally, have you subscribed to our channel?
If you haven't, you might like to think about it, because once you are subscribed, each time we post a new video (which we are doing all the time), you will find that they will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that will help other people find out about the information as well.
Love this! Would I need to cut it back each spring?
We do not know definitively yet!
So (honestly) the "school is still out" on whether it is best to prune it in spring or not. The plants you see in the video were trimmed to make them (like all our nursery plants) bushy and well shaped, and as you see they flowered beautifully!
So this would indicate that yes, they could be trimmed in the garden in early spring. But in European conditions (where they have more experience growing this type of panicle hydrangea) they do not prune them until after flowering!
In our trials we are testing them both ways, so we will know definitely in a year or two which is best for our conditions here in our USA region!
@@OverdevestNurseries now that it is mid April 2023, do you have feedback regarding its "survival" over this past winter in "real world" gardens?
If this is crossed with the pannicle type, could it be grown on standard? One day grafted into tree form? I suppose because it doesn't get tall itself it couldn't be pruned this way 😕 I'd love a really early blooming standard hydrangea
That's an interesting thought, but since it is not a tall grower, it is unlikely to get tall enough on its own roots and with the pithy stems grating might be tricky.
We agree, that this is such an unusual and beautiful selection, it would be wonderful to see it in different presentations.
We are wondering… Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Finally, now that our partnering garden centers: grownbyoverdevest.com/retail-locator/ are fully stocked with fresh new plants, if you live in our Mid-Atlantic and Northeastern region be sure to stop in and take a look…. Because that’s where you will discover all sorts of beautiful, tried and true and cutting edge, top performing selections.
Beautiful! How do we get these in Georgia????
Thank you, it is great to see you appreciated seeing and finding out about it. It is rather special!
New plants like this one tend to have limited availability at first. Even some of our partnering garden centers: grownbyoverdevest.com/retail-locator/) are only just finding out about it. No doubt (in time) it will become better known and is likely to be stocked by more and more garden centers as time goes on. Our best advice would be to inquire at your favorite garden centers, alert them to its merits, and see if they can secure them for you. Meanwhile, if you are ever planning on making forays up here to our region, if you call ahead, maybe some of our garden centers might be able to help you out.
Hello, is this the same as polestar hydrangea?
As we understand it, this is a different, more recent (and improved) selection by the same breeder in the Netherlands.
Hope this helps.
Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Tell us the zone and does it bloom on new wood
On our website (and tags) we list it with a conservative rating of Zone 5, which means that it is perfectly hardy right throughout our entire Mid-Atlantic and Northeastern USA region: grownbyoverdevest.com/plant/early-evolution-panicle-hydrangea/
Research suggest that it could well be much hardier than that, but since our only experience with it is here in our region, we cannot say definitively. The plants you see in this video were lightly trimmed in late Autumn, which suggests that it flowers on new wood but we know that some of the breeding lineage usually flowers best on growth made the previous year, so the school is still out until we do more extensive trialing. Stay tuned,
what zone is this? where can I buy in Canada (Manitoba)?
As you will see from this link to our website: grownbyoverdevest.com/plant/early-evolution-panicle-hydrangea/ it is currently rated as being hardy to at least Zone 5. But it time, further study may reveal it as being hardier than that. We offer it here in our Mid-Atlantic and Northeastern USA region through a network of partnering garden centers: grownbyoverdevest.com/retail-locator/ and I understand Sheridan Nurseries may be offering in in eastern Canada, but we do not know if any places in Manitoba that has it yet.
We suggest you keep your "ear to the ground" and ask at the leading garden centers in your area because something this good will inevitably make it into their line up if it proves hardy enough.
I have an Early Evolution in my garden and it's turning green after it was a beautiful white. Do you know why that would be? It's the first year - just planted it in May. I'm in zone 4b.
The color of the petals do change as they age. In cooler climates (Europe) it usually takes on shades of pink and here in our nursery they will progress through creams and a pinkish "antique" bronze, so its natural to see it gradually change. We suspect as your plant gets becomes fully established and with varying weather conditions each year, you will see a range of aging colors. The neat thing about them is that they persist well, usually for a very long time.
Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
@@OverdevestNurseries thank you for your reply! I appreciate your feedback
Brother when i can gate this biutifull flower pleace 🙏help me i like the flowers
Our plants are available through a network of hundreds of garden centers, here's a link that will help you find where they are all located: grownbyoverdevest.com/retail-locator/
Thank you you have helped me
David can you advise whether this is a cross of piniculata and Seratta?
It is reported as having Hydrangea paniculata and heteromalla in its genetic background. But, it looks nothing like the latter to me... so I suppose, we have to wait and see what those with much better botanical expertise can determine.
Good morning do you know when they will be in store’s in Canada?
We do not know exactly but we understand that our friends at Sheridan Nurseries in Ontario are working on it. So this would be a good place to check.
@@OverdevestNurseries Good morning just wondering if you know of any store's in the States will deliver to ontario I would like 2. Thank you
It actually was available last summer (2022) in Canada (I picked up 3 in Ontario). And so it should be more readily available in Canada in 2023.
Are they pruned like a PeeGee Hydrangea, in early Spring? Does this hydrangea bloom on new wood only?
Interesting question and one that still has to be fully investigated and determined! The general European consensus seems to be that these types should not be pruned in spring and instead be pruned in summer as soon as the flowers begin to discolor.
But with our production where we trim everything frequently to produce extra bushy, healthy, well-shaped plants…. these plants (in this video) were trimmed in late autumn and as you see flowered terrifically well!
Which shows that they flower well on new, current growth.
@@OverdevestNurseries since you say that the beautiful Hydrangeas in this video were pruned in late Autumn, were they then grown inside an unseated greenhouse where the roots never got to freezing ground? This then begs the question of what zone gardens would they be appropriate for. Even an unheated greenhouse is quite protected from hard winters as here in zone 5. These plants will also hopefully, be sold with LARGE PRINT PRUNING INSTRUCTIONS, since most people who grow and love Hydrangeas will prune off the new season blooms by pruning as we do those that bloom on new wood.
I would give these a try for sure, but I read directions and am pretty careful about timing the pruning if applicable.
These videos are so informative, make us all add the plants you show to our “must try” lists, and give great pleasure to us all just by your infectious enthusiasm. Many thanks David👍
Hi mr it new one hydrangeas ?
Yes, it is new, and rather special!
So this plant blooms on new wood is that correct?
No, it flowers on the wood from the previous year. So don't prune it in early spring, instead, if you need to prune it, do that shortly after the flowers begin to change color in summer.
Have you subscribed to our channel?
If you haven't, you might like to think about subscribing, because once you are subscribed, each time we post a new video (which we are doing all the time), it will turn up automatically in your feed.
And, as you find our videos helpful, it would be great if you could kindly share the links with your friends and click the "like" button too, because that helps other people find the information as well.
Finally, now that our partnering garden centers: grownbyoverdevest.com/retail-locator/ are continuing to bring in stocks of gorgeous plants, if you live in our Mid-Atlantic and Northeastern region be sure to stop in and take a look…. Because that’s where you will discover all sorts of beautiful, tried and true and cutting edge, top performing selections.
@@OverdevestNurseries i’ve been subscribed for a couple of years and I love every video. I just wish I was a little closer so I could come shop there. The nurseries within half an hour drive of me don’t have near the selection that you do.
@@OverdevestNurseries I wonder why it’s classified as a panicle hydrangea when it blooms on old wood.
What about the zones they florist in?
Overdevest lists it as zone 5, Monrovia says 4-9
Thank you Connie & Nom.
The exact hardiness level has yet to be fully determined, at this time we are conservatively listing them as Zone 5.