Well, it’s been exactly one week since the cucumber seeds were planted. I haven’t seen much growth above ground the past few days so I figured they might be building their root system up. I was right! Taking one pair out of their pot revealed that they were getting close to being root bound. Time to move up to the next size of container!
They’re just in some new potting soil (unsterilized) and I’m going to try watering bottom up, which is why they’re sitting in a tray. I mixed in some old liquid plant food into the water, too. They’ve also been moved to a light box I constructed by lining a shipping box with aluminum foil. I think it works pretty well!