This undated photo shows capillary mat seedling grower in New Paltz, New York. Watering these seedlings is crucial as two or three days of neglect could spell death. A simple way to automatically ...

If you can calibrate your capillary mat to work this way, that should be fine. If not, use a spray bottle initially to keep the potting-mix surface moist and increase water as the seedlings grow.

A capillary mat seedling grower. Watering these seedlings is crucial as two or three days of neglect could spell death. A simple way to automatically water seedlings is to rely on the soil to draw ...

This undated photo shows capillary mat seedling grower in New Paltz, New York. Watering these seedlings is crucial as two or three days of neglect could spell death. A simple way to automatically ...

Ready. Set. Go. Growing seedlings indoors seems almost like a race. Of course, it has a staggered start, with onions already growing strongly and tomatoes not yet sown. Watering these seedlings is ...

This undated photo shows capillary mat seedling grower in New Paltz, New York. Watering these seedlings is crucial as two or three days of neglect could spell death. A simple way to automatically ...