Planting Depth: Floater
Sunshine: Full Sun or Partial Shade
Blooming Window: Spring through Autumn
Noted for its prominent lavender-blue flowers and fleshy, rounded, floating leaves. Water Hyacinth grows quickly in warm water. A few plants bought in the Spring can easily turn into a few hundred by Fall (they are excellent for compost in the perennial border or the vegetable garden). Plants propagate readily from leaf shoots which develop into new plants. It is a welcome addition to the water garden for its ability to filter out unwanted nutrients and for its attractive flowers.
Growing water hyacinth plants is easy. Once established, they require no special care except occasional thinning to keep them from choking out everything else in the pond. Under perfect conditions, a colony of water hyacinths can double its size every 8 to 12 days.
Water hyacinths need full sun and hot summer temperatures. Introduce them to the garden by scattering bunches of plants over the surface of the water. They quickly take hold and begin to grow. Thin the plants when they cover more than 60 percent of the water surface.