Planting Hyacinth Bean
Hyacinth Bean is a warm season flower in the Fabaceae family. Getting the timing right is the difference between a strong stand and a disappointing one, so the windows below are given relative to your own last spring frost and first fall frost rather than a generic calendar date. Look up your local frost dates and count back or forward from there.
Hyacinth Bean is started indoors 3–4 weeks before your last spring frost date, giving seedlings a head start before they move outside.
Sow Hyacinth Bean directly into the garden 1–2 weeks after your last frost, once the soil has warmed.
Hyacinth Bean can be grown by direct sowing and starting indoors. Starting indoors gives the longest, most controlled season, while direct sowing is simplest where the season is long enough.
Spacing and Planting Depth
Give Hyacinth Bean room to mature. The figures below come from verified extension and seed-supplier data for typical varieties.
| Spacing in row | 6 inches |
|---|---|
| Row spacing | 36 inches |
| Plants per sq ft | 0.67 |
| Planting depth | 1 inches |
| Sun requirement | Full sun |
Days to Maturity
Hyacinth Bean reaches maturity in 90–120 days from transplant.
Hyacinth Bean is ready to harvest after about 105 days. Harvest before the first fall frost, which will end the plant's productive season.
Conditions and Care
As a warm-season flower, Hyacinth Bean needs warm soil and settled weather to thrive, and is set back or killed by frost. It is frost tender, so wait until all danger of frost has passed before planting out and harvest before the first fall frost.
Hyacinth Bean needs full sun — give it at least six hours of direct light a day for the best growth and flavor. Sow seed about 1 inch deep, then keep the soil evenly moist until seedlings establish.
Hyacinth Bean belongs to the Fabaceae family; rotating where you grow members of this family each year helps limit the build-up of soil-borne pests and disease. Hyacinth Bean is generally grown as a single planting each season rather than succession sown.
Companion Plants
Pairing Hyacinth Bean with the right neighbors can improve growth and deter pests; a few combinations are best avoided.
Grows well with: Corn
Growing Notes
Ornamental climbing legume; raw seeds toxic.