Fertilising a Physostegia virginiana 'Bouquet Rose'
To ensure the Physostegia virginiana 'Bouquet Rose' reaches its full potential, a consistent fertilizing regimen is key. Begin application in early spring as new growth appears, using a balanced, slow-release fertilizer that will provide steady nutrients throughout the growing season. A second application is beneficial in early summer, coinciding with the onset of the flowering period to enhance bloom vitality.
It is essential to apply fertilizer carefully, avoiding direct contact with the foliage and stems to prevent any potential damage. Watering the area after fertilizing will help to distribute the nutrients into the soil, allowing the roots to absorb them more efficiently. This practice supports the robust, upright growth habit and the lavish summer and autumn floral display characteristic of this species.