mini greenhouse
LilBit7765
8 years ago
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rina_Ontario,Canada 5a
8 years agobikerdoc5968 Z6 SE MI
8 years agoRelated Discussions
Trouble With Mini-Greenhouse Germination
Comments (7)First you need to understand that it isn't really a greenhouse, it is just a tray with a lid on it. So unlike a greenhouse it traps both heat and moisture and it prevents any air circulation. Conditions that are potentially lethal to both seeds and plants IF they germinate. Many discussions here about those problems. Second, since you mixed all sorts of different seeds, each with different germination times and temp requirements, your germination will be very sporadic and over a prolonged period of time. For best results in the future only do 1 or 2 types of seeds in each tray and do them in individual cell packs or containers so they can be removed as they germinate. Third, since I live in zone 9, the temperature of the mix never really drops below 70 degrees isn't accurate. There is little correlation between air temp and soil temp and it is soil temp that matters. Most seeds need soil temp between 75 and 90 degrees and the air temp just can't supply that. Soil temp will always be 10-15 degrees cooler than air temp. So you need to add bottom heat to bring the soil up to germination temps. Lots of discussions and a FAQ here on how to do that. Fourth, soil temp problems are compounded by the use of deeper containers such as the pots. It only takes 1" of soil to germinate seeds. And as you discovered with the baggie method, not even that much. Deeper containers with more soil that the 1" can't get warm enough for germination. So the tray and cover deal can work but you need to use shallow containers in it with only a bit of soil and bottom heat. All the other problems with the Jiffy pots I'll skip for now since you are already using them but there are many discussions about them you'll want to review for future reference. Right now, given what you have described, bottom heat of some source it going to be about all you can do. That and some patience and avoiding overwatering should solve most of your problems. Hope this helps. Dave...See MoreMini greenhouse advice needed!
Comments (4)I would like to use it for some smaller cacti of mine, probably won't use it until it gets nice out again. I don't think we plan on hooking up some type of heating for it....See MoreGermination Boxes / Grow Boxes / Mini-Greenhouses - Show Me Yours
Comments (4)Seeds don't require a lot of soil for germination. As a matter of fact, I would have lots of problems with your container. I've always used standard #1020 plastic trays, with drainage holes. I sow two or three hundred seeds in each tray, place them over heat mats, and stick them in my little grow room that we assemble in the garage each winter. The trays, of course, are very shallow, but the seedlings only remain in them for a very few days after germination after which they are transplanted into trays with plastic inserts....See MoreOverwinter in mini Greenhouse on Porch?
Comments (7)Gabby- You won't need lighting or even a heater. I do what your idea is:). Basically make a mini greenhouse with plastic. You just have to remember to uncover so things can breathe. If you don't, the plastic covering will start a whole greenhouse effect, and begin to grow more unwanted things;). Very important to pay attention to the weather forecast. So you can prepare. For example today I will be putting everything away for winter. Today's the day booo:(. Tomorrow- Sunday it's suppose to rain and then drop to the low 40's at night. So I will keep everything covered for those three days. Ok I just looked at the weather forecast again and it's only suppose to rain on Saturday. Hmm it's always changing. Anyways I'm still going to put everything away. The nights are getting cool. So I will cover on Saturday and uncover Sunday morning. Then just cover at night. So make something that will be easy to cover and uncover. You will be doing the succulent shuffle for a few months. Covering and uncovering, covering and uncovering;). Just worry about the rain and cold nights. There may be some days where you won't have to cover because it may be warm enough at night an no rains. For my plants I will cover if the nights drop to the mid to low 40's, but if the low is like 47F I don't cover. They'll be fine especially if dry. I know they could handle lower, but that's my cutoff;). You have lots of Haws and I was always under the impression they could handle the cold. If kept dry. If pots are too big like my Firestick I will cover with sturdy garbage bags and clothes pins. Well I'm off to move things to their winter home;). I will be bringing my IPad out with me if I have any questions about a plants hardiness I can look online. These are what I will be moving most my plants on to. Then covering with plastic by tacking to the fence. I will also squirrel away things in corners so they're protected by the house and cover on rainy days and or chilly nights. This gets covered too:). Some things do come inside like my Desert Roses, Melocactus, some Euphorbias, and Dorstenia. If you have any questions about a plant's hardiness just look online. I keep these plants in a south facing window. Winter is a pain the you know what, but it's worth it....See Moredavez7anv
8 years agobikerdoc5968 Z6 SE MI
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