Microgreen Mold Nightmare? Say Goodbye to the Fungus Among Us with These Strategies!
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- Äas pĆidĂĄn 25. 06. 2024
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Learn how to prevent Microgreen mold in 6 minutes! Join Curtis Stone in this short clip to learn the four steps you can take to avoid mold in your greenhouse. Quick, simple and to the point, this segment will help you take control over mold and regain better, healthier yields in your greenhouse!
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About Curtis Stone:
Curtis is one of the worldâs most highly sought-after small farming educators. His book, The Urban Farmer, offers a new way to think about farmingđ one where quality of life and profitability coexist. Today, Curtis spends most of his time building his 40-acre off-grid homestead in British Columbia. He leverages his relationships with other experts to bring diverse content into the homes of gardeners and aspiring small farmers from around the world. Learn more at FromTheField.TV.
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SUMMARY:
1. air flow: make it sufficient
2. humidity: keep it down e.g. water effectively
3. heat: keep it in proper range
4. hygiene: sterilize flats e.g. soak in bleach water
Sterilizing solution:
- 1.5 L water
- 50 mL white vinegar
- 50 mL food grade hydrogenperoxide
Spray lightly on surface. Not too much!
Thank you
Thanks
What is considered a good humidity range? I heard a temperature range but not a humidity range.
@@JohnCharlesFoster :D just watched some video's from a guy that doesn't use peat moss because it's not sustainable but does use perlite, sneases in his grow room and let's his dog in.....but doesn't have time to compost and read/watch up. 'Cause he's hip and doesn't like the old-school a-holes. Stopped wondering where the e-colli came from. PS : the answer is mentioned in one of the other video's ;)
Is that 35% food grade hydrogen peroxide?
Dude thank you for this! Been having problems in my greenhouse and you're one of the only people giving practical and applicable advice. Keep it up man!
Greetings from New Zealand. I have not even planted one seed yet, but already watched at least 30 of your videos!
I received the 1st seeds, and waiting on my trays.
Great stuff! Keep it up!
Stop watching and start growing!!!
You are a fantastic teacher and Iâm so appreciative of your channel thank you so much for helping out a single mom trying to start her own business thank you
Thank you
Absolutely awesome. Huge thanks for the tips!
Thank you that was super helpful for a beginner like me!
Thank you for this video Curtis!
good tip. Thanks.
Way Super Helpful.
thanks for the tips
In regards to your question about content ideas, I just want to say that I find the daily updates very helpful. I'm sure it seems mundane to you, but being new to all of this, I find it very helpful. I enjoy hearing what you are doing that day, why you are doing it and how you are doing it. Thank you for all of the videos!
+Dr. J thanks for that. Great hear and reassuring that I'm not repeating myself too much. Good to know that people are valuing it.
+1 to Dr. J's comment but it's gotta be hard to crank these out day to day. Looking forward to see how you do the poly with just 2 people and a production crop below ;-)
Me too! ;)
OMG! Thank you so much! We thought we had mold but it was part of the seed germination process! Thank you so much because we were concerned that we had to get rid of a delicious tray of amaranth sprouts! LOVE YOU!!!
Thank you for mentioning the temp in Fahrenheit
Great video. I thought I had fungus when I noticed fuzzy white stuff as the seeds were germinating. Relieved to know that this is expected when first germinating.
Thank you!
Just started microgreening and my first attempt with Radish after removing the weight (2 days) the sprouts had that fuzzy white cotton like stuff at the bottom of the little stem, I freaked out thinking that it was mold, but this video clarified it wasn't! Thanks for your videos they have shown me important techniques !!
Very informative . Thank you so much . Been learning a lot. Trying to start Microgreen business little by little . God Bless
How is that going for you?
Thank you Curtis! As always, excellent content and a great presentation! Looking to do a SPIN market garden here in a more suburban part of the greater SF Bay Area.
Awesome, definitely keep me posted on your progress with that, i would love to come visit your farm!
I was getting mold on my wheat grass and simply spread baking soda on the soil and use baking soda mixed with water to water and never had mold again!
Great idea wit engineer, what ratio of baking soda to water are you using?
@Dror Levi What do you mean by this and why is this the case?
Interesting... I've never done that !
My main tool is Grapefruit Seed Extract, about 40 drops per quart. I soak seeds in it and spray during the early days in particular.
I can't say thank you enough for this particular video. I almost tossed my sunflowers 2 flats. I thought it was mould at the bottom.
Sunflowers can be tricky. I just made a video on root hairs vs mold if you think that can help you! czcams.com/video/HjWH_9wB71c/video.html
When you soak your flats, what is the ratio of hydrogen peroxide and water. Is that the 35% hydrogen peroxide?
Nice. You answered my question right at the end. I am new to microgreens and have white fuzz on my 2 day old radish and sunflower sprouts. "Part of the germination process" Gotcha. Thank you.
Yeah it was probably root hairs. I just made a video on this actually czcams.com/video/HjWH_9wB71c/video.html
sunflower shoots are attacked by Sclerotina sclerotorium and this fungus is very contagious. I treat the seeds with 2% hydrogen peroxide along with a bit of soap for 30 minutes, maybe 40 minutes would be better, but 30 minutes hasn't killed the seeds so far. the problem is, that the fungal spores are quite tough to kill, unlike bacteria. using a surfactant (soap) does actually improve the effectiveness of the peroxide.
another method is to use potassium bicarbonate (about 2.5g per liter) in the early germination stages. potassium bicarbonate inhibits growth of the fungal hyphae and the extra potassium increases the turgidity of the shoots
Jonas LĂ©chot what soap do you use? How much do you use in water? and how much hydrogen peroxide? (I'm assuming you dilute!)
now I finally got rid of sclerotinia mold. and there's only one fungicide-free way to do it.
1. step: get rid of all fruit flies and gnats, they love to hang out among the sunflower shoots and they infect all the sprouts they touch. once you have sclerotinia the flies will keep spreading it.
2. soak the seeds in 0.3-0.4% (3-4g per liter) ammonium bicarbonate for about 8h. No other bicarbonate will kill the fungus, it must be ammonium. After soaking your seeds will be 100% free of sclerotinia, but they still may have Pythium (damping off) spores. These are not as contagious, though.
3. in case you spot sclerotinia mold in your shoots again, tear out the affected part plus a buffer zone to prevent further infection.
Thank for sharing
omg!!!! thank you so much!!!! now i can stop worrying :0
Fantasitc vid...how many times do you treat the greens with this solution?
Great video thanks for the good info. Do you ever water the flats when they are covered during germination? Thanks!
+Trey Bauhaus no.
Just want to say thank you for your helpful information. I thought my radishes were producing mold. Had I not watched your video, I would've thrown all the flats away. Again, thanks.
What % peroxide is it?
What is the percentage of Hydrogen Peroxide used in the mixture? 3%, 10%, 35%?
3%
how much humidity should I be maintianing?
Awsome
I have the most mold problems with wheat. Sometimes sunflowers and peas. I use 1 tsp of Grapefruit Seed Extract in 1 at of water.
Hey Curtis, what is the drip irrigation set up like on your basil?
hey curtis im just getting started with my greenhouse tomatoes any tips on spacing i have a 9ft round house
What's your take on the chamomile solution method?
Hi Curtis, you mentioned fava bean sprouts on another vlog. How are you liking it? Is it a good seller for you?
I have purchased your book and is my go to book. Thanks :)
Thanks! I use bottom watering for my greens, it takes time but my farm is not as big as yours. In the future I want to build a big flood and drain table to water the microgreens where they stand from the bottom. It would work in your green house as well Curtis. I never have any mold :-)
I've been looking into doing that for a while, but there are some logistical challenges for us with it.
I just started 4 trays of seeds on coir mats 3 days ago, this morning, the brocolli and 2 week blend are full of mold in germination stage..geesh! So I just sprayed with peroxide 3% without knowing anything...I think the mats are too thick too. I have the seeded mats in the black perforated trays which are set within the solid trays and covered for germination time with another black solid tray. Seems too much humidity? i like the idea of watering from below and NOT having any mold issues. Help...any other suggestions?
use black soldier fly larvae casting in the middle or top layer of the soil
How long to wait before watering?
I have never had mold on sunflower. Today I had to dump a tray of garlic chives. It looked like grey carpet. In the mold was maggots! I grow out side where it been 85-110F! Broccoli is another I have mold issue with in this heat!
So do you spray for the mold on sunflowers by default, or do you always check every tray. In this video anyway you seemed to barely be able to find the mold, and then sprayed all the flats. No judgement, just asking. I was sprouting fodder for my chickens for a while and quite due to not being able to really control the mold. Would love to get back to it.
Just curious what is the mixture ratio od hydrogen peroxide white vinegar and water?
Does anyone know what is the optimum humidity level?
Dear Chris what amount of soil do you put on your trays??
Hi Curtis!
Do you have a fast way to get rid of the sunflower microgreen coat after they germinate and start to create leaves?
like half of them lose the coat by themselves, but the other half I pretty much do by hand...
And what is a good humidity level?
Thank you!
I haven't watched this video yet but I wanted to place a comment where you would be sure to read it. I've watched several of your previous vids and have been delighted with your candor and quality of information. You have done an excellent job of presenting the facts and even though I'm just a home gardener, you make me want to start a small farm! Thank You!
+johniwan1 thank you.
My grandfather had a root cellar and he used onion bags full of real charcoal.. The charcoal would absorb the excess moisture in the summer and in the winter, it would release its excess moisture. So it's self regulating. I also read that the Japanese used charcoal in their basement to eliminate dampness. Just an idea.
Ditto that!!!!!!!!!!!! :)))))))))
johniwan1 has ïżŒ
Hey thanks for the info here. Great stuff. Can I ask, what is the ratio of bleach to water you use when disinfecting your flats [between crops]? I'm assuming it's different ratio/strength to the remedial spray?
I just our a cup worth or so in a tub of water. No exact amount.
for how long do you soak sunflower seeds in food grade hydrogen peroxide?
Hi Curtis. If and when you get seeds that turn to mush in among your already growing microgreens - especially large seeds do you pick them out, or leave them in situ.
I'm testing out some old chickpea seeds I had in the kitchen cupboard, I'm not intending to sell them, just testing my setup. About 70% have germinated with 1.5 inches of green growth - but they stink!
Not sure if it was the water or manky seeds in the tray.
Hello, I am a new member. I want to know who uses neon to make grow microgreens? it takes special neon? could you tell me the model and size? many thanks in advance.
hey curtis, the sprayer you're using- is it reliable? I can never buy one of those things without it clogging up after 3 weeks of use. Even after cleaning them they still work spottily.
Great video! Just one question, why do you combine vinegar and hydrogen peroxide? The antimicrobial properties that hydrogen peroxide has comes from it's high pH, vinegar has a low pH by mixing the two you are lessening the antimicrobial properties of the hydrogen peroxide. You might get away with reducing the hydrogen peroxide level and not adding the vinegar. Unless the salt which is formed from the acid base reaction is really what is keeping the molds in check, but that seems unlikely. Anyway keep up the good work\videos!
Are you sure the antimicrobial properties come from the pH of peroxide? The chain reaction that makes peroxide so powerful it's the reactive oxygen that is liberated when the peroxide breaks down. This oxygen oxydates organical matter and the high pH accelerates the chain reaction. That's why common hydrogen peroxide, sold in pharmacies, comes with some sort of acidic substance as a stabilizer.
So I believe the vinegar helps as both microbial substance as a natural stabilizer to hydrogen peroxide in the solution with water.
How do u reuse the soil??
How much peroxide or what is the ratio to water should I use, I have a very small garden on my table in Phoenix and was surprised to see mold. Im using grow pads and soil but will start with coconut core next batch
mold mold mold..day 3 germination 1st time grower. I wonder if we needed to disinfect the new coco coir matting at same time we soaked them for the 24 hrs? Also wonder if they are also just too thick? and should they be covered during germ. period to avoid light? We did but wondering if just not enuff air circulation and a build up of humidity?
What do you use to control fungus on outdoor plants like zuchinni, pattypans, etc? Often we get cool damp summers where I am so we often get so much fungus on the leaves (or mold.. not sure what it is) it really looks terrible. If it is not too crazy, it does not affect how much product I get from them but it looks awful! I like to try & stay as organic as I can. Does the vinegar/Hydrogen Peroxide mix work with this as well? (aside from trying to keep the leaves dry/watering at the roots instead of from top)
I have a green mold on top of my potting soil. Will this process work on that, and how often should I do it in the process of correcting the green mold?
Thanks from Pakistan
thanks for this video. How many days do you leave the sunflower seeds in the dark?
I think the strategy is to leave them in blackout until the roots are firmly engaged with the soil and hulls are beginning to break free from rubbing against the top of the top tray ("blackout dome").
you say you dip the trays for sterilization - I can't find what the ratio is for that? I grow seedlings in polystyrene trays and look for a safe, organic way to sterilize them before reusing them... I would appreciate very much your advice
If may I ask, can you try mixing water and coconut oil. Then spray like you do with water-vinegar-hydrogenperoxide mix. Just a small portion. And see if it works against it. I don't know if it works but someone told me that could be work, I don't have any chance to try.
How many time a day you spay the seeds
Hey There! Such an informative video. Thank you so much! I was just wondering are you saying 15 mls of vinegar and food grade HP or 50 mls?
+Dominique O'Brien 50 for both
Thanks so much! By the way we are watching from all the way in Barbados ;) We love watching your videos
Love your video. What is the dilution percentage of the hydrogen peroxide? I noticed the hydrogen peroxide comes in different dilutions. Also, how often do you spray the solution on the sprouts? Thanks!
Hi Curtis, great video as I am a newbee. Is food quality hydrogen peroxide the same as over the counter? Hydrogen Peroxide first aid antiseptic? Thanks my Friend.
What do people think of bottom watering so that thereâs never direct water contact on the seeds or top of soil?
Works great for me
Takes alot of time if you've got lots going on though.
Good day to all .
One excellent and natural anti fungicide is the plant horsetail herb ( Equisetum ravens) spraying the plants twice a week will be no fungi problem.
You can collect horsetail from a garden yard or in the wild, horsetail reproduce by rizomas and in some areas can be invasive, once you collect it chop it in small pieces and than use one pound of horsetail on five litter of water, most recommended is to use rain, pond or spring water or use tap water just let it repose for 48 hours to let go the chlorine, boil this mix for 20 minutes and not use an aluminum pot can be an iron or stainless steel pot and use a wood spoon to stir up the mix, let it cool and let it stand for 48 hours it will turn a brown greenish color and thus the concentrate will absorbe the properties from the horsetail, than use a fine strainer and strain the mix, the horsetail remained use it as compost and your horsetail infusion save it in plastic containers fill it up the most you can so you can prevent less air , you can save the infusion containers inside your fridge up for a year or place it inside a black plastic bag and save it up for four months under cool storage conditions
than you can use it in ratio 2 litter in horsetail infusion to 4 litters of clean water and spray every 2 weeks for fungi control.
I only have problem with Fava and wasabi both are super sensitive and won't grow after treatment with H202 any other suggestions?
I grow wheatgrass outside in trays and get a little white mold or fungus on the roots only, not on the grass. I'm guessing that's not a problem-any thoughts?
There have to be other ways to stop mold. Investing hundreds of dollars and all that electric being used does not counter the cost. One of the main points in growing is that it's cheaper than the market. Yes, growing for health value is why I do it, but I still want a ratio of product and cost value.
I thought during the summer, I could get good airflow by growing them in a screen house. The idea of baking soda is something I will try too. Great info !!!!!!
Curtis,
Where are you getting food grade H2O2? Maybe it's because I'm in a rural-ish part of the US, but I'm having a difficult time finding 35% Hydrogen Peroxide and most online retailers are carrying a diluted version to avoid hazmat shipping fees.
How do you determine if it's worth the time to build resources instead of buying them, for example a shelving unit i could have bought for 30 dollars, instead i spent a week converting timber into wood into a shelving unit. That's a extreme example, but theres gotta be some kind of formula to determine if my time is better spent doing something else profitable.
Can someone tell me if its mixed in with water or just 50ml of vinegar and 50ml of hydrogen peroxide
Would putting out trays or plates of desicant(?) make a difference in the humidity, or would it just be a waste of time and effort, and mun? Also, if you could give the imperial measurements for amounts that would be nice, but if not, I'll just google it, so no biggie if it is too much of a hassle.
what food grade hydrogen peroxide do you use?
My spicy salad mix,broccoli have a smell coming from the tray. Is this normal? Tried 2 trays and both have a smell.
So, I use vinegar as a herbicide, and it is Hell-a effective at killing anything green I hit it with. Is your solution so diluted that the vinegar doesn't take out your crops? What if you omitted the vinegar entirely? What about using a little citric acid instead? In my experience in high concentrations it can be just as strong as vinegar but in low dose it seems a bit mild(er)?
Whats the percentage of Food Grade Hydrogen Peroxide? (there are a lot of percentages it seems.. which is super annoying :/ )
Hi, Don't have a greenhouse and all the rest.... temps average 35 - 40°C, sometimes 46, humidity 80 -96%, but I would love to grow a few microgreens/sprouts just for myself so I can eat and live healthier! Fresh veg is not readily available here. Any ideas????
Have you considered using ozone in water for fungus - mold - disinfection? It's safe and organic and once set up, you could use it liberally throughout the farm
Sounds interesting...
What is that sort of spray bottle called? I gotta get me some!
It's a pump sprayer or pump spray bottle, they're sold at many garden centers and online. Just make sure it's food grade plastic (HDPE or PP). It will be labeled on the bottom.
Have you tried potassium permanganate for sterilisation? I'm not sure consuming hydrogen peroxide even food grade is the best idea.
What's the ratio of bleach to water when you submerge your flats?
what % of food grade peroxide to buy ?
Curtis how to you get the hills out of sunflowers? John Entrekin
I brush them off with my hands each day after I water :)
Hi curtis! Question about my microgreens: almost all my sunflower seeds germinated, but only half of them actually took good roots and started growing. i have half grown sunflower trays. Do you know what could be the issue there? I sanitized them, soaked them, and everything as usual. I had good harvests in the past.
Thanks for your time. Big fan of your videos thank you
Hard to say, possibly bad seed.
Make sure you have good temperature.... I dropped mine a bit and germination was so uneven and bad....
Did you place weight on the top tray while in germination?
Venigar and hydrogene peroxide , mix with water and spray the plant to reove the mold
I having trouble finding an affordable source for sunflower seed. is it ok to buy birdseed sunflower seed for sprouting?
No, don't use that. Order from Mumms Sprouting seeds.
What's the strength of the bleach solution you soak the trays in? Is the hydrogen peroxide 3 percent?
I am curious about this as well. I am also curious about what strength of hydrogen peroxide is used in the 1.5 l sprayer he uses to spray the flats. Thereâs a big difference in 3% hydrogen peroxide and the 15% I have.
Interesting. How does airflow help if fungus needs oxygen to grow?
Hal Asimov actually fungi thrive in humid stagnant environments
I've heard cinnamon powder helps deter mold also.
Have you tried cinnamon? Did it help/ work?
20-25 degrees celcius heat
What exactly are those fuzz?
Root hairs, itâs how the plants begin to get their nutrients from the soil while the root structures are still small I believe...what I realized is that because we typically sow microgreen seeds on top of the soil, rather than burying them, we get to see what is normally happening under the soil. So cool...
What do you do with used soil and seeds (sunflower, pea shoots) after you harvest the Microgreens? The soil can be recycled right? but then what about the possibility of mold in the soil?
compost it.
Why does it say not to mix vinager and hydrogen peroxide? It says its bad for your lungs and all kinds of stuff. Could you clarify please? Just in case!
đty
Is there a trick to getting the seed hulls to let go? That's been my biggest problem so far with growing sunflower microgreens. I have to go through and pick off so many hulls by hand. Thanks.
I can't guarantee it 100%, but using some sort of potassium supplementation will increase the turgidity of the shoots and the hulls will pop off more easily. sources of potassium would be: potassium bicarbonate, potassium sulfate, or my favorite: wood ash with 10% (by weight) concentrated sulfuric acid. the acidified wood ash contains ±everything plants need except nitrogen which is abundant in the seed anyway.
you should make some videos on how you save your plants since you are so good at it it'll be helpful for everybody
I'll try to make some videos, actually I wanted to make some already quite a while ago.. but I never quite made it
@@JoLe1991 thanks for the tip
Husks is one of those words that sounds weirder the more you think about it.
How strong was your 50ml food grade hydrogen peroxide and white vinegar? 100% mixed in the 1 and half litres of water? I know the food grade hydrogen peroxide usually comes in at 35%. I'm assuming you just add 50ml of this? thanks.
Yep. 29-35% is the standard.
Thank you! I was specifically looking for this info... hoping I might find it in the comments on one of the micro green videos. 3% is fairly common too, so I wanted to be sure I got the right thing.