Yardlong bean

Vigna unguiculata subsp. sesquipedalis

In a typical UK garden, sow indoors early April to early May, sow outside mid-May to late July, plant out early May to early June, and harvest late June to late October.

When to sow, plant and harvest

Last frost around 20 April, first frost around 31 October.

Sow indoors
early April to early May
Sow outdoors
mid-May to late July
Plant out
early May to early June
Harvest
late June to late October

Growing facts

Spacing
20 cm apart, rows 90 cm apart
Square foot
4 per square (30 cm squares)
Sowing depth
2.5 cm
Ready in
60 to 90 days from sowing
Grows to
2.5 m
Hardiness
Tender: killed by any frost
Sun
Full sun
Crops for
About 8 weeks

Growing tip

Pick pods every day at 30 to 45 cm long, before the beans swell; in cool areas grow them under cover.

More legumes

Where these figures come from

Every crop in VegLog was checked against published growing advice. Dates are worked out from average frost dates, so they shift with your garden. For yardlong bean, we used:

Grow yardlong bean with VegLog

Add yardlong bean to a bed and VegLog reminds you when to sow, plant out and pick, timed to your own town's frost dates.