Damping off! **Please** help!
I started my affair with gardening last year, we bought one of these cheap plastic greenhouses and starting growing various plants from seed. I then met damping off and had a terrible time with it. I read all I could find about damping off and this year I set out on a mission:
We bought a new cheap plastic greenhouse, new seed trays, new everything, new seedling compost, etc. We went hygiene mad.
I've painstakingly sown my seeds at a good distance apart from each other to avoid overcrowding,
I've provided good drainage using grit and mixed it in with my compost,
I've watered from below as sparingly as I can,
I've sprinkled grit on the surface of larger seeds,
I've opened the greenhouse most days to allow good air circulation,
I've used cinnamon on the surface,
Nothing seems to have worked and my seedlings are suffering and dying because of damping off again, the ones that haven't yet died I'm so scared they will end up dying anyway
I was wondering if anyone else can advise what I should do?? (I've removed the offending pots and I still have some other trays in there which don't seem to be affected... yet).
Should I cut holes/flaps in the side of the greenhouse to improve air movement?
Has anyone had any luck with charcoal?
Should I do a deeper layer of cinnamon?
I didn't want to use chemical, but now I'm starting to be open to the idea to avoid the heartache, can anyone recommend a brand which I can spray the surface with?
What else can I do? This is driving me mad!
I have 0 budget to buy anything better than this cheap greenhouse and my windowsill is full. Please help!