Comfrey, a cherished medicinal herb, is renowned for its wound-healing properties. Rich in allantoin, it promotes cell regeneration, making it ideal for external poultices. Due to pyrrolizidine alkaloids, comfrey should only be used topically. 25 seeds minimum Germination: 14-21 days Lightly scarify seeds and start indoors 6-8 weeks prior to last frost date. Plant in seed starting mix and very lightly cover with soil. Keep evenly moist but not soggy. Harden off and transplant outdoors in full sun when soil temperatures reach 68 degrees+. Space plants 12-16 apart.