Comfrey is indeed a relatively easy plant to grow from seed. However, it is important to note that not all varieties of comfrey produce seeds. Some varieties, such as Russian comfrey (Symphytum x uplandicum), are sterile and do not produce viable seeds. In such cases, propagation by cuttings or root division is the preferred method.
If you do have a comfrey variety that produces seeds, the process of growing comfrey from seed is relatively straightforward. Here’s a step-by-step guide:
1. Obtaining seeds: You can purchase comfrey seeds from garden centers, nurseries, or online seed suppliers. Alternatively, if you have a comfrey plant that produces seeds, you can collect the seeds yourself. Harvest the seeds when they are fully mature and dry, usually in late summer or early fall.
2. Preparing the soil: Comfrey prefers fertile, well-draining soil. Before sowing the seeds, prepare the soil by removing any weeds or debris and loosening it with a garden fork or tiller. Adding organic matter, such as compost or well-rotted manure, can help improve the soil’s fertility.
3. Sowing the seeds: Scatter the comfrey seeds evenly over the prepared soil surface. You can lightly press them into the soil, but avoid burying them too deeply, as they require adequate light to germinate. It is a good idea to sow the seeds in rows, with about 1 inch (2.5 cm) between each seed.
4. Watering: After sowing the seeds, water the area gently to ensure the soil is evenly moist. Avoid overwatering, as this can lead to rotting or poor germination. Keep the soil consistently moist until the seeds germinate, which usually takes around 10-14 days.
5. Germination and seedling care: Once the seeds have germinated and the seedlings have emerged, thin them out if necessary. Ideally, you should aim for spacing of about 12-18 inches (30-45 cm) between each comfrey plant. This will allow them enough space to grow and spread.
6. Transplanting or thinning: If you have sown the seeds directly in the final growing location, thinning may not be necessary. However, if you started the seeds indoors or in a separate nursery bed, you will eventually need to transplant the comfrey seedlings to their permanent positions. Wait until the seedlings have developed a few true leaves before transplanting them.
7. Care and maintenance: Comfrey is a relatively low-maintenance plant. Once established, it is quite drought-tolerant and does not require frequent watering. However, providing regular water during the first few weeks after transplanting or during dry periods can help the seedlings establish themselves. Mulching around the plants can also help conserve moisture and suppress weed growth.
8. Harvesting and propagation: Comfrey can be harvested once it reaches a sufficient size, usually within 3-4 months of planting. You can harvest the leaves by cutting them near the base of the plant. Comfrey is known for its ability to regrow quickly, so regular harvesting can be done throughout the growing season. Additionally, if you wish to propagate more comfrey plants, you can do so by taking root cuttings or dividing the plant.
While comfrey can be grown from seed, it is important to ensure you have a variety that produces viable seeds. If not, propagation by cuttings or root division is a reliable alternative. Growing comfrey from seed involves preparing the soil, sowing the seeds, providing adequate moisture, and caring for the seedlings until they are established. Once the plants are mature, they can be harvested for various purposes, and propagation can be done through root cuttings or division.
