Lucy68 said: What you want is a cold frame, a box with a lid. You can easily DIY it. I've built more than one out of PVC pipe and clear tarps. I even got clever and built a lid with a "hinge."
Totally what I would say….
brauneyz said:
May I ask why you prefer this system? For the same price these kits appear much smaller
Can be very cheap, and very temporary. Easy to store for next year. Add a light bulb and it's a hot frame for colder nights. VENT IT EVERY MORNING!
brauneyz said:I will research the DIY suggestions & see if I feel comfortable biting that off.
You might be missing how simple this can be!
Four cinderblocks, two 2x4's and some plastic drop cloth to cover it is the easiest! VENT IT EVERY MORNING! (Did I already say that?)
I once used the crib railing side of a discarded crib, propped horizontally on four cinder blocks and covered in plastic.
Here's some links to DIY coldframes and the strategy for using them from university extension sources:
Building and Using Hotbeds and Cold Frames
All About Cold Frames
Building a Coldframe or Hot Bed