How to Propagate Cow parsnip?
Primary propagation methods for cow parsnip include seed sowing and division. Key factors for success involve ensuring adequate light, temperate conditions, and fertile, well-drained soil. Special consideration should be given to cow parsnip's large size and potential skin irritants when handling. Propagation is generally considered moderately difficult due to its specific requirements and slow germination. To propagate by seed, stratify the seeds for 3-4 weeks at 5°C, then surface sow in early spring, pressing lightly into the soil without covering. Keep moist until germination, which can take 2-3 weeks under optimal conditions. For division, do so in spring or fall by carefully splitting the rootball and replanting the divisions. Provide consistent moisture and shade until established.