Fertilising a Inula ensifolia
To maintain a healthy growth and vibrant yellow blooms, it is advisable to fertilize Inula ensifolia once at the onset of the growing season. A balanced, all-purpose fertilizer applied in early spring will provide the necessary nutrients as the plant emerges from dormancy and prepares for the flowering months. Ensure the fertilizer is well-integrated into the soil to avoid runoff, especially since this species thrives in well-drained conditions.
Given that this plant's water requirements necessitate submerging, it's crucial to ensure that the fertilizer is not washed away during watering. A slow-release formula is beneficial in this case, allowing a gradual supply of nutrients that coincides with the plant's natural growth cycle and its need for consistent moisture. This bushy perennial will respond with robust foliage and a profusion of blooms throughout its flowering period.