As a comment about
Purple Hyacinth Bean (Lablab purpureus),
Sharon wrote:
This vine surprised me. Here in the heat of western Kentucky most vines die out by the end of July, but not the Purple Hyacinth Bean vine. It seemed to grow and bloom forever, long after the leaves had fallen from the deciduous trees. It's a great vine for covering fences or a trellis quickly, producing purple flowers and those striking electric-purple colored seed pods. Lablab bean is a good choice for a quick screen, though. It grows so fast, has beautiful, fragrant flowers that attract butterflies and hummingbirds, and it even produces edible leaves, flowers, and roots. Dry seeds are poisonous due to high concentrations of cyanogenic glucosides. I particularly like it because of the numbers of hummingbirds it attracts.