Starting seeds

I've never started seeds indoors. I've always direct sown seeds into the garden (radishes, beans, squash) and planted purchased plants (tomatoes, peppers). This year I plan to try my hand at starting from seed and transplanting.
My average last frost date is May 5 so it's still pretty early for us. Parsley can be planted very early, and it takes 21 days to germinate, so I thought I'd start some of those this weekend.
I'm running an experiment. I have two seed trays and I'm going to plant identical things in each tray and see which plants do better in which tray.
One seed tray I've placed on top of a regular heating pad we had on hand. They sell warming pads specifically for germinating seeds but I didn't see the point in spending $25 to $30 on one, plus shipping. The heating pad came with a spongey thing you could dampen for moist heat, so it should be pretty safe in a moist environment. Nevertheless, I wrapped the heating pad in a garbage bag in case of water spills, and set it to the lowest setting. Thus far, my thermometer sitting on the heating pad registers 65 to 73 degrees. Pretty good, considering most plants like soil to be at about 70 degrees for germination to take place. I'm going to monitor the temperature directly on the heating pad for another day or so. Then I'll also monitor the temperature on top of the seed tray just to get an idea of variance within the cups.
The other seed tray has a clear plastic dome. It just sits in the greenhouse without benefit of heating pad. I'm not sure what the soil temperature is but I would imagine it varies quite a bit, even with the dome there to help warm the soil and regulate the temperature. I plan to put the thermometer on top of this tray and underneath the clear dome, and see what kind of temps I'm getting in there.
I'll post an update after I've had time to monitor each location with the thermometer for a few days, and I'll post updates showing which plants do better in which tray.
Labels: garden














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