How to Fertilize Hosta Plants

Overview

Hostas are shade-loving perennial plants that grow well in moist, temperate climates. Some varieties can grow quite large, and their lush leaves can be variegated or plain. Hosta leaves usually have a bluish hue due to a protective wax covering their leaves, and this color fades as the season passes and the wax wears off. Some types of hosta have fragrant flowers that open in late summer or early fall. Hostas prefer well-drained soil that's rich in organic material, and they do not have very demanding feeding requirements.

Step 1

Feed your hosta plants in the early spring when new growth is just beginning. Use a general purpose fertilizer that has an even balance of nitrogen, phosphate and potassium. If you are using a synthetic fertilizer, take care not to get any granules on the leaves of the plant because it can burn them.

Step 2

Use organic fertilizer instead of synthetic chemicals. Organic fertilizer is safer for you, your plants and your soil. Dried or composted animal manure has the right balance of elements, and it's only necessary to apply it in the spring because it releases into the soil slowly. Spread a 1-inch layer of manure at the base of the plant and work it into the soil.

Step 3

Encourage strong root and foliar growth in weak or newly planted hostas by fertilizing them with a blend that is slightly higher in nitrogen. If you're using manure, consider adding worm castings or fish emulsion to increase the nitrogen.

Step 4

Fertilize hosta plants again in early summer when foliage is opening. Do not add extra nitrogen when you fertilize hostas in the summer, especially if yours is a blooming variety.

Step 5

Avoid fertilizing hosta plants during the two months before the first expected fall frost. The plants enter a period of dormancy, and fertilizer makes it hard for them to rest.

Step 6

Spread mulch and compost around hosta plants in the fall. This will help keep the plants warm and the soil moist.