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Cynosure
allow me to be your guide.


Registered: 10/06/09
Posts: 4,228
Last seen: 11 months, 12 days
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Moldy coir;
#14269144 - 04/10/11 08:50 PM (12 years, 9 months ago) |
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I'm hoping some of you greenthumbs could help me out here!
I bought a couple of biodegradable seed starting kits. Basically, they're a bunch of 1x1" square cells with a block of coir in each. The instructions were to wet the coir so that it expanded, plant the seeds, cover with a germination sheet, and wait for your seeds to sprout.
I watered the coir, planted about 2-3 seeds in each cell (a variety of vegetables and entheogens), and covered it with the humidity sheet. Within 3 days I had seedlings sprouting and all-in-all I was very happy to have purchased these little cells to put my babies in.
However, there is a lot of cobweb mold growing on the top of some of the coir as well as another type of mold (no idea what it is) growing on the tops/sides of the biodegradable cells. Any ideas of how to get rid of it and how to keep it from happening (I have two more kits that I plan on putting seeds in)?
I'm worried because I don't want the molds to overcome my seedlings and kill them; I also have my mushrooms fruiting and colonizing in the next room and don't want the mold to infect them!
Many thanks!
-------------------- "You can peel it [language] off the ceiling and make it dance in front of you" - McKenna <3 .
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karode13
Tāne Mahuta



Registered: 05/19/05
Posts: 15,290
Loc: LV-426
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Re: Moldy coir; [Re: Cynosure]
#14270706 - 04/11/11 04:57 AM (12 years, 9 months ago) |
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3% Hydrogen peroxide sprayed on the cobweb should deal with it.
You could also start to lower the humidity in the domes and this will control the cobweb. It's only growing because it's in a humid, warm environment with little fresh air. Introducing fresh air and lowering humidity should have that mould clear up without the use of H202.
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Cynosure
allow me to be your guide.


Registered: 10/06/09
Posts: 4,228
Last seen: 11 months, 12 days
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Re: Moldy coir; [Re: karode13]
#14271278 - 04/11/11 09:20 AM (12 years, 9 months ago) |
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Thanks for the help on killing the cobweb! This won't affect the seedlings, will it?
To reduce the humidity of the cells, do you suggest that I remove the germination sheet fully, or just take it off a few times during the day? It's literally just a plastic sheet that lays on top of the cells.
-------------------- "You can peel it [language] off the ceiling and make it dance in front of you" - McKenna <3 .
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karode13
Tāne Mahuta



Registered: 05/19/05
Posts: 15,290
Loc: LV-426
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Re: Moldy coir; [Re: Cynosure]
#14276390 - 04/12/11 02:43 AM (12 years, 9 months ago) |
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If your seeds are up you can acclimatise them over a week or Two and then the mould should subside on its own. Gradually remove the lid until it's no longer needed.
I just seen this thread>>link.
I answered the same question with the same answer. Déjà vu.
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Cynosure
allow me to be your guide.


Registered: 10/06/09
Posts: 4,228
Last seen: 11 months, 12 days
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Re: Moldy coir; [Re: karode13]
#14277081 - 04/12/11 09:28 AM (12 years, 9 months ago) |
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While I agree, you helped me with a similar situation (and I thank you for the help, as it worked!), but this instance is a bit different.
I had already removed the plastic sheet about once a day for an hour in order to rid the cobweb (in according to the previous thread about cactus soil) but it was not working. I posted this thread for new information and different ways to tackle the situation. I swabbed the cobweb with peroxide, and it has already cleared up. So thanks again!
However, the mold on the sides of the containers is what's worrying me. I hope this picture will depict where we're at.

As you can see, the sheet is lifted by the seedlings. The sheet has been lifted like this for over a week (and from me taking the germination sheet off once a day). It seems, to me, that the cell under the tallest plant should be getting enough air in order to kill whatever mold that is (according to your lowering-humidity tek) but it isn't. Looking at the sides of the cells, you can see where the mold is growing without being trapped, or even touched at all, by the germination sheet.
I've applied peroxide this mold at the same time as the cobweb, so I'll give it a few days and see if it's still alive.
-------------------- "You can peel it [language] off the ceiling and make it dance in front of you" - McKenna <3 .
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karode13
Tāne Mahuta



Registered: 05/19/05
Posts: 15,290
Loc: LV-426
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Re: Moldy coir; [Re: Cynosure]
#14282212 - 04/13/11 03:55 AM (12 years, 9 months ago) |
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Almost looks like mycelium, hard to tell. Whatever it is it's living because of the damp, humid conditions. Probably was introduced with those peat pots but was dormant until favourable conditions arose.
If it were me I'd of already removed that plastic layer. It's not doing anything productive, only stifling those seedlings. I'm not sure what you're growing but they're in dire need of more light.
A fungicide could be used but I'd just get those seedlings green and healthy, then pot them up and get them outside. Not sure where you've been keeping them but it doesn't seem to be the ideal place for them. The wind and sunshine should clear that up on its own, or it could keep growing. Indoors is probably why they're sick. Outdoors mother nature takes care of things but indoors we are responsible and while we think we're clever we aren't as clever as her and things go wrong.
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Cynosure
allow me to be your guide.


Registered: 10/06/09
Posts: 4,228
Last seen: 11 months, 12 days
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Re: Moldy coir; [Re: karode13]
#14282597 - 04/13/11 07:56 AM (12 years, 9 months ago) |
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Okay. I will go ahead and remove the plastic sheet completely instead of taking it off for intervals during the day.
I only started introducing them to light yesterday. I had to go purchase a light for them as it still gets pretty cold outside here. I'm new to the whole planting/gardening scene, so I figure it will take me some time to figure out when I'm doing something wrong and find a way to correct it.
I will do my best to get them outside ASAP! I'll start taking them out on warmer days and bring them back in as the sun starts to set.
Thanks again for your help, karode! You're a plant-life saver!
-------------------- "You can peel it [language] off the ceiling and make it dance in front of you" - McKenna <3 .
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karode13
Tāne Mahuta



Registered: 05/19/05
Posts: 15,290
Loc: LV-426
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Re: Moldy coir; [Re: Cynosure]
#14288270 - 04/14/11 02:33 AM (12 years, 9 months ago) |
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No problems. Good luck with that and let us know the outcome.
Plants are fairly easy to grow, most are anyway. Some people think too much about growing them and that's where they go wrong.
When growing a new plant try and find a guide, then follow it. After growing a few different species you'll get a feel for plants and then you're on the road to becoming competent grower.
You'll kill plenty of plants learning the craft but that's part of it, don't let it get you down. I've lost count of the amount of plants I've lost over the years.
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