Trillium Rhizomes not sprouting
I bought some Trilliums and they came as root cuttings. They looked healthy. I potted them up in a tray, watered and kept in unheated garage about 12 days until temps didn't go below 40 at night. Then put them outside in semi shaded area with row cover protection.
It's been over 2 weeks and only 3 sprouts of 12. Should I continue as is or should I put them under grow lights? I am concerned that the soil has stayed fairly wet without drying due to spring showers.
I did carefully uncover one and the rhizome looked good and solid.
What do you suggest?