I have kicked off this year's seeds in a homebuilt grow box.
It's 2" foam all round, with two small LED grow lights, and a battery warmer belt for heating when the lights are off.
After last year's data with a 120W battery warmer, I now heat it with a 60W warmer belt, which is achieving the aim of maintaining a steady 23 degrees, same as when the lights are on. No control circuitry needed.
Several new stuff for this year.
I'm growing some cherry tomatoes, cucumber, spring onion, lettuce, and peppers in containers. This means I can get an early start on salads.
I have several varieties and several pot sizes, so I'm trying to find out what yields the best fruits/square foot.
These seeds were started 2 weeks ago, and I have about 80% germination.
The weather here means I can't start planting out in the ground till mid-May. The containers will move from my sunroom to the deck just outside, and back, until decent weather is consistent.
I'm aiming to get a full set of herbs, seeds started today. The no-success ones in previous years were sage and chives. Any advice appreciated.
I'm also going to try assorted positions for the containers around the house to try to prevent bolting in all the cold weather crops - our Spring is only about 3 weeks, then it gets hot.
Vining the tomatoes and cucumbers last year was very successful, so much so that I am using more support posts and stronger top bars as several broke under the weight of fruit.
A sample of last year's harvest
Decode: Sunflower-got at by ants and mice. I have plans for their demise this year.
Then clockwise, spiraling in - Beets, huge onions(co-planted with tomatoes and peppers), enormous parsnips and carrots (very sandy loam here, ideal for roots), courgettes (large and small - leave them a week and small becomes large, but they taste the same and store well), pumpkin, green pepper (May was unusually cold all month, so no peppers turned red before First Frost), beefsteak and Roma tomatoes, broad beans, kidney beans, apples, butternut squash (these have stored till now with no special treatment), 6"/15cm ruler for scale.