Fertilising a Nepeta × faassenii 'Six Hills Giant'
To ensure the continued vitality and robust blooming of Nepeta × faassenii 'Six Hills Giant', a balanced approach to fertilization is recommended. It should be fertilized once in the early spring as new growth appears. A second application can be beneficial just before the onset of the flowering period in late spring.
An all-purpose, slow-release granular fertilizer works well for this species, providing a steady supply of nutrients throughout its active growing season. Be sure to apply the fertilizer according to the manufacturer's directions, spreading it evenly around the base of the plant while avoiding direct contact with the foliage to prevent burn.
With its bushy spreading growth habit and drought resistance, Nepeta × faassenii 'Six Hills Giant' does not require frequent fertilization beyond this, as excessive feeding can lead to lush foliage at the expense of flower production.