Fertilising a Hypericum calycinum
To support its lush, evergreen foliage and vibrant yellow blooms, Hypericum calycinum benefits from being fertilized annually. The optimal time for fertilizing is in early spring, as new growth begins to emerge. A balanced, slow-release fertilizer applied at this time will provide the necessary nutrients for the plant's growth and flowering needs throughout the season.
As this species is adaptable to a wide range of soil types, the key is to ensure well-drained conditions, particularly when applying fertilizer to prevent nutrient runoff or potential root damage. Spread the granules around the base of the plant, taking care not to come in contact with the foliage to avoid burn. Water thoroughly after application to help the nutrients penetrate the soil and reach the roots.