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Winged Asparagus Bean (pole)

Psophocarpus tetragonolobus

$4.50
Description

*these seeds are easy to germinate if you follow our tips! Nick a little piece of the orange seed coat off with nail clippers but careful not to injure the embryo inside. Soak overnight and plant the next day. Seeds are very hard and resistant to germination without this step!*

This is a really unique bean, a new one to us that we'd been waiting to try for a long time. She didn't disappoint! This cool bean from New Guinea is a 4-sided ruffled bean that is quite large and definitely something folks will stop to look at in your garden! Referred to as "asparagus bean" because its supposedly similar to asparagus, which is a novelty in Florida because it's such a challenge to grow. Although some gardeners are not fans of the flavor, others say it's their favorite legume ever!! This tropical perennial is entirely edible from root to pod. The tuberous root is eaten as a starch cooked or raw, its leaves are eaten like spinach, the flowers are sweet and edible, and the bean is edible raw or cooked as a green pod, or cooked as a shelled bean.

Local seed saver Eugene Fueyo grew these and gave us the seed that we're offering. He grew it from seed purchased from Baker Creek where it was called "Urizun Japanese Winged Bean" Here is what he had to share with us:

"Day length neutral and the pods, seeds, leaves, and tuberous root are all edible. It did great in the horrible soil (but full sun and decent moisture and I did inoculate them) I had direct planted them and they produced tons through the worst of summer heat and rain. Grew about 8-10 ft long with multiple vines per root. Pest were limited to ants trying to eat the pods in the late season, but they only made aesthetic damage. Hummingbirds and bees were all over the beautiful blue flowers. The sprouting was erratic and I had read somewhere that presoaking the seeds was not a good idea after I had planted some that way. Most sprouted for me eventually whether I presoaked or not."

Product details
  • About 15 seeds
  • 70 days to harvest
  • Seeds grown in Working Food gardens at GROW HUB in Gainesville, Florida
How to grow

The seeds are easy to germinate if you do it right! With nail clippers, ever so lightly clip off a little piece of the seed coat, being careful not to injure the tissue underneath. Soak 12-24 hours before planting for best germination results. Seeds will swell in size and for those that don't they can be left in water longer (or planted, but will take longer to germinate). Keep well moistened until they emerge.

Legumes are able to manufacture their own nitrogen (magic + science!) and typically do not need very rich soil or much fertilization at all. Well composted and healthy soils are still encouraged, but you will not need to offer them much in the way of fertilizer. In fact, too much will encourage rampant leafy growth at the expense of the pods.

Plant about 1"-1.5" deep, spaced 4-8" apart at the base of a trellis. These beans definitely need to climb. They do not tolerate frosts and so should only be planted when we're not expecting any more freezes. Direct sowing is recommended as legumes don't typically appreciate the trauma of starting in a pot and then going into the ground.

How to save seeds

Legumes are able to manufacture their own nitrogen (magic + science!) and typically do not need very rich soil or much fertilization at all. Well composted and healthy soils are still encouraged, but you will not need to offer them much in the way of fertilizer. In fact, too much will encourage rampant leafy growth at the expense of the pods.

Beans do not tolerate frost and so should only be planted well after the last expected frost is over. They can also be planted from spring and into late summer/early fall. Direct sowing is recommended as legumes don't appreciate the stress of moving from a pot into the ground.

Allow seeds to dry indoors once picked, and shell soon to avoid molds and pests that hide in the pods. Harvest early and bring indoors if they are close to maturity but the humidity is high. Continue drying with silica or clay beads, or in a household dehydrator at low temperature.

Seed can easily be saved from just 1 plant, but 5-10 is better, while 20+ is even better.

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