Origin: China; possibly Africa
Yardlong bean 'Asparagus bean'
Preferred Situation: Full sun; well draining garden soil.
Harvest Date: Sunday 05 February, 2012
Seed count: 25-30
Yardlong beans are my favourite ever since served a dish of spicy greenbean with shrimp years ago. I find this black seeded strain very productive. Plants grow very quickly and start producing harvestable 30-45 cm long dark green tender stringless meaty beans in 2 months after the first set of true leaves. Needs a very strong trellis/pole bean tower to hold the mass off the ground. Once established its very resistant to heat that knocks back production in quite a few regular bean varieties. Very pretty mauve & ivory flowers.
In tropical climates, this bean can produce for more than a year. In our temerate climate, it will produce until the weather knocks it down. Pods grow quickly so check your trellis often. Can be blanched and frozen...or canned.
Not frost tolerant, so if you sow these outdoors do so after the threat of spring frost is past. Or get a jump start on the growing season by starting indoors 3-6 weeks prior to seating outdoors. Soak seed 12 hours until fully rehydrated. Sow 1-3 cm deep in warm well draining medium. Germinates in 7 days. Give lots of light and room for the roots to grow. Plants are only as good as their roots. A dusting of legume innoculant to hydrated seed prior to sowing improves vigour.