Amaryllis Flower Fertilizer. Garden Tools Paintings for Affordable Prices. During the growing season March through September two or three light applications of fertilizer may be applied.
21092017 Fertilizer for Healthy Growth. If using a slow release fertilizer apply every 3-4 months. When the flowers fade place the plant in light shade and irrigate with a water-soluble fertilizer solution to encourage the growth of new leaves.
To promote blooming use a houseplant fertilizer with a high phosphorus content.
Instead use a low-nitrogen fertilizer to. Amaryllis is toxic to cats and dogs according to the ASPCA. Fertilize amaryllis each time you water at half the recommended strength when new growth is visible including on newly purchased bulbs. The amaryllis needs a liquid nitrogen-phosphorus-potassium fertilizer every two weeks or a slow-release formulation administered monthly or bimonthly.