Zones 4 through 8. Hyacinths may be grown in zones 9 and 10 if they are precooled (see below). To determine your zone, see the map in
Spring.
Full sun to half-day sun.
Fall.
Well drained. pH 6.0 to 7.5.
When planting, mix 1 teaspoon of bone meal or superphosphate into the soil at the bottom of the planting hole. During the growing season, fertilize with a balanced plant food according to label directions.
How much: Apply enough water to wet the soil 1 to 1½ feet deep.
How often: Water when the soil an inch below the surface is just barely moist. Stop watering the bulbs when the foliage turns yellow.
Continue to water and fertilize plants regularly until the foliage turns yellow. Remove foliage after it has turned yellow. In zones 9 and 10, precool bulbs for 6 weeks before planting by storing them in paper bags in the refrigerator crisper.
