Rhubarb prefers a deep, light, and well-drained soil that is rich in organic matter. It grows best in slightly acidic soil with a pH between 6.0 and 6.8.
Before planting, enrich the soil with compost or well-rotted manure. This will help promote healthy root and stem growth.
It is important to loosen the soil to a depth of at least 30 cm. This allows the roots to develop freely and stabilize.
Planting
Plant rhubarb in the spring after the last frost or in the fall. It prefers a location in full sun or light shade for optimal growth.
Space rhubarb plants 90 to 120 cm apart to allow for proper development. Be sure to plant the roots at a sufficient depth to avoid stress.
When planting, choose healthy, well-formed rhizomes. Avoid planting old or decomposed rhizomes to ensure a good harvest.
Watering
Water rhubarb regularly during its growing season, especially during dry spells. Keep the soil moist but not waterlogged.
Good irrigation is crucial for young rhubarb plants. Use a watering can or drip irrigation system to avoid wetting the leaves.
Reduce watering during winter when the plant enters dormancy. Ensure the soil remains slightly moist to prevent the roots from drying out.
Pruning
Trim rhubarb stems in late winter or early spring to encourage healthy growth. Remove any diseased or damaged stems.
Do not cut rhubarb stems before they are mature. The stems should be bright green and vigorous before harvesting.
Harvesting
Harvest rhubarb stems in the spring or early summer when they are 30 to 45 cm long. Cut the stems close to the base of the plant.
Do not wait until rhubarb stems become too long and thick, as they may become fibrous and less flavorful. Early harvesting ensures better quality.