A first tray of early lettuce, set out in the unheated greenhouse yesterday afternoon, survived the around-zero night no problem. Lettuce is quite forgiving, and I’m forgoing the usual hardening off, going straight from the grow racks to the greenhouse ground. Although the sun feels great (it just came out now), hopefully it will only appear in breaks over the next couple of days, or the lettuce will be toast. The soaker hoses running up and down were on yesterday for a few hours to get ready for transplanting (without watering, inside the greenhouse, the ground obviously gets very dry).
plug sheet
Plug sheet action
Plastic cling wrap is everywhere. I tried it out last year as a replacement for clear tray covers and it seems to work fine. The method so far: fill the plug sheets with seedling mix, place tray in water so mix is soaked from the bottom up, drop in 2-3 seeds per cell, cover lightly with more mix, soak surface with spray, apply plastic wrap (it sticks nicely to the wet edges of the plug sheet), fill out label marker with variety/date and plunge through plastic (those labels are all that stand between you and variety chaos!), then it’s off to the racks. Now, the trays don’t have to be watered for a week, the mix retains more heat, and you can check moisture by looking at the condensation on the plastic. At first, I wondered about adequate air circulation and whether the fairly closed conditions would encourage algae, but the seedlings emerge on time with no unusual algae problems. As soon as the first couple of seedlings appear, it’s off with the plastic. I re-use the plastic as well, over the 4-5 weeks of seed starting, and the bit of waste in the end, well, I think it’s moderation in everything that counts. (In the top right of the pic, the Vittoria eggplant is tenting its cover, having pushed up vigorously in just six or seven hours overnight. It’s a feisty one!)
Lettuce overnight
The first lettuce pushed up overnight! Here, lovely red Granada, an Oakleaf-type leaf lettuce that intensifies into a deep burgundy as it matures. Also in trays, Sierra, Simpson Elite, Two Stars and Red Salad Bowl. Now, how early will they be ready for market (the farmers’ market kicks off the first Saturday in May…)?