Centranthus ruber Albus is a perennial plant belonging to the Valerianaceae family with an upright habit it prefers neutral and well-drained soil it likes full sun exposure it needs regular watering only if grown in a pot otherwise water only during prolonged drought fertilize from March to November with flower plant fertilizer either liquid or granular at least once every 30 days regularly remove wilted flowers and at the end of the growing season in autumn cut back the drying aerial parts to encourage new growth that will appear in spring