How to Fertilize petunia [Phantom]?
Apply a water-soluble flower fertilizer every 2 weeks during growth.
petunia [Phantom] · Petunia Phantom ('Balpephan')
Grow in light, well-drained soil in full sun, with shelter from drying winds. Plant out after frosts have passed. Treat as a bedding plant
Apply a water-soluble flower fertilizer every 2 weeks during growth.