When to plant greenhouse tomatoes?
I have a single wall, clear poly-carb greenhouse. I have 3- 8 foot long X 16" deep X 18" wide soil boxes with heat tape in the bottoms. I have the soil up to 58 degrees in the boxes but it still gets down in the teens at night & the inside of the walls condensate & form ice. I can cover the soil boxes with clear plastic, keeping the 60 degree or so temperature around the plants thru the night. During the day I get 65 degrees inside & on sunny days I'm getting 75 deg. We now have about 14 hours of daylight & still increasing. I have thoroughly mixed the soil in the boxes, adding perlite with compost. I just watered the boxes today with hot water & plan to let the moisture even out for a couple of days. I can probably hold 60 degrees in the boxes if covered at night.
I know i'm getting "cabin fever" & want to get things growing.
Should I try a couple of plant & risk losing them or be more patient & wait 2 or more weeks?
I plan to uncover them during the day to let them breath & have a small fan running for inside air circulation. If they were to make it, they'd be "hardened off" to the greenhouse & transplant shock over with when growing season arrives. In Alaska tomatoes have to be grown in the greenhouse, well if you want lots of fruit anyway.
Started tomatoes from seed, 7 weeks old, re-potted in 4" pots 1 week ago. 4" tall plants now.
This would be the earliest I've ever planted the geenhouse by about 2 week, but the weather has been cooler this year. Still have snow on the ground.
Heating the greenhouse is out, cost & single wall 8 X 12 greenhouse would take more power than it's wired for. Plus $100 per pound makes tomatoes just a little too spendy.