Comfrey FAQs

The best time to plant comfrey is in spring or fall when the soil is moist and temperatures are moderate. Avoid planting during summer heat or winter freezes for best results.

Mature comfrey plants can spread 2-3 feet wide, so space plants at least 3 feet apart. The deep tap roots need unrestricted depth, so avoid planting over underground obstacles.

Comfrey prefers full sun to partial shade. It will grow in deeper shade but may produce fewer leaves and flowers. For optimal growth, provide at least 4-6 hours of direct sunlight daily.

Bocking 14 is a sterile cultivar that doesn't spread by seed. However, it can spread from root fragments, so plant it where you want it to stay or in containers to control its spread.

You can begin harvesting once the plant is well-established, typically in its second growing season. For new plants, wait until they have at least 5-6 large leaves before taking any.

Fill a container with chopped comfrey leaves, cover with water, and let steep for 3-6 weeks with a lid. Dilute the resulting liquid 10:1 with water before applying to plants as a nutrient-rich fertilizer.

Comfrey contains pyrrolizidine alkaloids that can be harmful to the liver. External use as poultices or salves is traditional, but internal consumption is not recommended and is restricted in many countries.

In optimal conditions, comfrey can be harvested 4-5 times per growing season. Allow the plant to regrow to at least 12 inches tall between harvests to maintain plant health.

Comfrey roots are sections of the plant's tap root, while crowns include both roots and the growing point where leaves emerge. Crowns establish faster but roots are more economical.

For a small garden, 3-5 plants is usually sufficient. For larger areas or if you plan to harvest frequently for compost or tea, consider 10+ plants. Each plant can produce several pounds of biomass per year.

Orders typically ship within 3-5 business days. Delivery time depends on your location, but most orders arrive within a week of shipping. We'll provide tracking information once your order is on its way.

Yes, comfrey can grow in containers, but they need to be at least 12-15 inches deep to accommodate the tap root. Use a container at least 5 gallons in size with good drainage for best results.