1) Not to overwater- last year was a total mess I watered everyday and had fungus gnats galore. This year practically NONE in my seedlings... yahoo! I consider that success! Where I could I watered from the bottom up (i.e. filling the bottom tray with water and letting the cells wick up the water). I basically watered every 3-5 days.
2) How to use coir/peat pellets- This worked our really great. First things first... this discussion on peat pellets is incredibly helpful to anyone using peat pellets. The key points of this article are
- When transplanting out take off the netting
- Not all pellets are made the same... they may not be absorbing water in the middle, if you suspect this toss out and use a new one.
I got this really handy tray at the end of last season on clearance. Its a Burpee coco coir pellet tray. It is conveniently labeled with letters along each side and comes with a handy grid so you can easily keep track of what you started.
The simplicity of it made this a huge success... of course the alternative was that I have always made my own potting mix. My logic is if I am buying nice amendments for my garden why should I buy a separate potting mix. At one point I was even sterilizing it (my husband LOVED that ... NOT... ha ha I was essentially cooking dirt in the oven... I think he would have preferred it if it was banana bread). I still need potting mix to transplant up but I think the pellets are here to stay!
3) I did not have adequate lighting for my seedlings- I rely mostly on natural light coming through a southfacing window in my house but supplemented this year with a CFL grow light bulb in a cheap reflector. Definitely helped with the seedlings but it was not enough. I still got leggy tomato seedlings. This is probably just a mental block for me... at some point I'll invest the mental energy to find a economical solution for this... now is just not the time.
4) Even seedlings need some sort of fertilizer- I always make my own potting mix for seedlings and I thought that if I used one part compost I wouldn't have to worry about fertilizer, but this year in effort to battle leggy tomatoes I used a dilute combination of fish emulsion and Kelp fertilizer. It helped the seedlings however more than the seedlings I used it outside to kick start dormant plants outside and I think there it was more useful.
5) Timing- This year I was much more organized as to when I started my seeds but I think I can still use some tweaking for next year. This was my schedule this year:
February 1- my cool weather crops, basil and eggplants
March 1- tomatoes, and chilli/pepper plants
April 1- everything else (cukes, melons, okra, etc).
I think generally my timing was fine. I am debating starting cauliflower, cabbage, eggplants and chillis earlier next year but not sure whether the poor growth was more a timing issue as much as a inadequate lighting issue.
6) Transplanting up vs planting out- I always seem to have problems with this... especially with tomatoes but this year I grew more things so it was more of a problem. I know your not supposed to transplant certain things like okra but if you live in a temperate climate like mine where weather is unpredictable it ends up being a balancing act between:
- planting out in the garden but keeping them covered
- transplanting to a bigger container and leaving them indoors for an extended period
- keeping them in the smaller container/pellet b/c it may only be one more week
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