Spring flowering bulbs bring some of the first color to gardens as they begin to wake up from winter dormancy. Hyacinths are among the earliest bloomers, often poking their heads up before even the daffodils begin growing. Hyacinths produce clusters of flowers along flower spikes. They come in a profusion of colors and are especially attractive when combined with other spring bulbs in the garden. As perennial bulbs, hyacinths can survive for many years if they are cared for properly.
Fertilize hyacinth as soon as it begins showing new growth in spring. Apply 5 tbsp. of soluble 10-10-10 analysis fertilizer per each 10 square feet of hyacinth bed. Sprinkle the fertilizer around the plants, taking care to keep it off the tender young leaves.
Replace winter mulch with a 2-inch layer of bark mulch to preserve the soil moisture and prevent early weed growth in the growing bed.
Water the hyacinth once a week when the top 1 inch of soil begins to feel dry. Water until the top 6 inches of soil feels moist.
Cut off the flower stalk with a pair of shears once the blooms wither and die. Leave the foliage in place until it yellows and dies back on its own, approximately six weeks after blooming. Cut the foliage off at soil level.
Fertilize hyacinth a second time in fall approximately six weeks before the first expected frost. Apply a soluble fertilizer at the same rate as in spring, and also apply 2 cups of bonemeal to each 10 square foot area.
Cover the hyacinth bed with a 4-inch layer of straw mulch when the ground begins to freeze in the fall. Straw mulch prevents temperature fluctuation in the soil, which can cause damage to bulbs.