Fibrous Dragon Wing Begonias
I started some fibrous dragon wing begonias from seed January 16th. They started germinated 10 days later and I now have 7 out of 9 that have come up. Have them on a heat mat with constant temperature of 22 degrees. They seem to be very slow...a couple seem to be getting another leaf. Is this normal? This is my first attempt at growing these. I don't have them under light...just in the south window. They are under a plastic dome to keep the moisture in. When should I get them off the heat and into potting soil....do I wait until the first two true leaves? Any growing tips would be appreciated.