Horseradish: Sowing, planting and harvest calendar
How do you sow horseradish outdoors?
Horseradish is usually propagated from root pieces or young plants. If you have identified seeds of Armoracia rusticana, sow them in spring in a container outdoors, positioned somewhere warm and sunny. Choose a deep pot with drainage holes, at least thirty centimetres wide and deep. A container makes monitoring easier and limits the establishment of a deeply rooted clump in the garden.
Fill the pot with suitable growing compost and moisten it, then scatter the seeds thinly. Cover them lightly with compost and follow the supplier's instructions for your seed lot. Water through a fine rose so the seeds remain in place. Maintain consistent moisture without leaving water in the saucer, and check the pot more often during dry weather.
After germination, thin seedlings if they crowd one another. Remove weeds carefully and allow the young leaves to develop. Seed-grown plants take longer to form a clump than plants started from root pieces. Wait for strong establishment before considering a harvest. This calendar covers sowing and the development of seedlings rather than immediate root production.
How do you harvest horseradish?
