Days to Germination:6-18 days
Encased in paper-like shells, Rhubarb seeds should be soaked for 24 hours before planting. Start indoors as transplants 5 weeks before the last frost date. Sow 3 seeds 1⁄2" deep in 4" pots. Cover with soil, tamp down and provide 70°F temperatures, strong light, good air circulation and uniformly moist soil until seedlings emerge. After 2 weeks, thin each pot to the strongest plant. After all danger of frost has passed, harden plants off by gradually acclimating them to the outdoors over 7 to 10 days. Amend the soil as necessary with organic fertilizer, compost and/or well-rotted manure. Transplant 12" apart in rich, well-draining soil and full to partial sunlight. Water and feed regularly. Mulch. To harvest, pull the shiny, green to rosy-red, 18" stalks out of the soil (rather than cutting them) and discard their poisonous leaves.