Yard Long Bean is an annual grown for its fruit, ready to harvest about 60 days after planting. Season length, not a winter zone, decides where it grows. Its summer flowers are a moderate draw for honeybees and native bees, even though the fruit is the prize. A nitrogen-fixer, it draws nitrogen from the air and feeds it back to the soil — turn it under or leave the roots in place, and the next planting inherits a richer bed.
Yard Long Bean — the short answer
Yard Long Bean: grown in zones 3–12, full sun, pH 4–8.8, about 60 days to maturity.
- USDA zones
- Grown as an annual — see the growing season
- Growing season, not a hardiness zone
- Soil pH
- 4–8.8
- We haven't confirmed this against a published source yet.
- Sun
- Full Sun
- Converted from FAO ECOCROP
- Days to Maturity
- 60 days
- We haven't confirmed this against a published source yet.
- Frost-kill temp (growing season)
- 30.2°F
- We haven't confirmed this against a published source yet.
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — each tile names its own row's source, because per-field provenance varies.
Score Yard Long Bean on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether yard long bean actually takes — and those shift from one yard to the next. Enter your address and we'll score yard long bean against your land's real conditions.
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See Yard Long Bean
What Yard Long Bean is
Yard Long Bean grows as an annual and reaches around eight feet at maturity. It blooms purple in summer.
Life cycle, mature height, bloom period and flower colour: We haven't confirmed this against a published source yet.
How to grow Yard Long Bean
Season length, not a winter zone, decides where yard long bean grows; it is ready to harvest about 60 days after planting. Yard Long Bean does best in full sun — at least 6 hours of direct sun a day — and soil from pH 4 to 8.8, on well-drained ground. It needs around 2,000 growing degree days to mature and a growing season of at least 30 frost-free days, which is why climate matters as much as soil.
USDA Zones
Grown as an annual — see the growing season
Soil pH
4 - 8.8
We haven't confirmed this against a published source yet.
Sun
Full Sun
Converted from FAO ECOCROP
Drainage
well (dry spells)
We haven't confirmed this against a published source yet.
Frost Kill Temperature
30.2°F
Where cold starts killing growing tissue. Not a winter-survival floor — a dormant perennial takes far colder, which its hardiness zone answers.
We haven't confirmed this against a published source yet.
Minimum Growing Temperature
59°F
Below this it stops growing rather than dies — a pace limit, not a survival limit.
We haven't confirmed this against a published source yet.
Days to Maturity
60 days
We haven't confirmed this against a published source yet.
GDD Required
2000+
Growing degree-days of accumulated warmth it needs to mature — humid summers reach this faster than cool coastal ones.
We haven't confirmed this against a published source yet.
Mature Height
8 ft
We haven't confirmed this against a published source yet.
Frost-Free Days
30+
The frost-free stretch it needs start to finish — short-season areas may need an indoor head start.
Growable Ground plant catalog
Start the season right
Plant yard long bean in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed. We haven't confirmed this against a published source yet.
Match the soil
Yard Long Bean prefers pH 4 to 8.8. We haven't confirmed this against a published source yet. A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band. It fixes its own nitrogen, so skip the high-nitrogen feed and instead dust the seed with a matching rhizobium inoculant at sowing.
Water steadily
Keep the root zone evenly moist through establishment. We haven't confirmed this against a published source yet. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at maturity
Yard Long Bean is ready about 60 days after planting. We haven't confirmed this against a published source yet. Pick when the fruit is full-colored and parts easily from the stem.
Where Yard Long Bean thrives
Season length, not a winter zone, decides where yard long bean grows. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
A USDA zone is a 10°F band of average annual extreme winter minimum, so zones 3–12 spans average winter lows from -40°F to 60°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 49 outright and splits 2 more down the middle.
Zones 3–12·Hardiness bandOpen map →
This map is derived from the USDA ARS / PRISM Plant Hardiness Zone Map (2023) and is not the official USDA Plant Hardiness Zone Map.
Where Yard Long Bean stands, state by state
Yard Long Bean is rated for zones 3–12 — a cold floor USDA puts at -40 to -30°F. Across the 50 states and DC, 49 sit fully inside that band, the line runs through 2 more, and 0 sit outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 3–12
49 states
3 of 49 shown
State zone extents: USDA Plant Hardiness Zone Map (PHZM) 2023. A zone is a 10°F band of average annual extreme minimum temperature, so a state that splits the band contains the boundary — its own page draws the county line, and a parcel report resolves which side your land sits on.
What grows around Yard Long Bean
Growing guides for yard long bean
In rotation planning, yard long bean counts as a Legume — beds recover best when legume crops don’t follow each other in the same spot year over year. (Growable Ground derivation — crop-rotation group from botanical family)
Related plants in vegetable
Good to know
Yard Long Bean offers moderate value to bees and other pollinators. We haven't confirmed this against a published source yet.
Before you harvest yard long bean, know your soil
Anything you grow to eat takes up what's in the ground it grows in, so it's worth knowing what's documented near you before you plant yard long bean for food. Our free screen reads 8 federal source types across roughly 950K indexed sites and shows which sit near your address and which way they drain. It's a screening estimate from public records and proximity — not a soil test — so a nearby record means a soil test is worth it, not that your soil is unsafe.
Your land is one point inside Yard Long Bean's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
See if Yard Long Bean will thrive on your land
Zone averages are a start. Your soil pH, drainage, sun exposure, and frost dates shape whether yard long bean actually takes. We score it against the mapped and modelled conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
How we know this about Yard Long Bean
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database
Frequently asked questions
Can I grow Yard Long Bean in my zone?
Yard Long Bean is grown as an annual, so a hardiness zone does not decide it — its growing season follows your last and first frost dates. Soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
How long does Yard Long Bean take to grow?
Yard Long Bean is ready to harvest about 60 days after planting. We haven't confirmed this against a published source yet. Your local frost dates and soil temperature move that window earlier or later.
When should you plant Yard Long Bean?
Most growers plant yard long bean after the last spring frost, once the soil has warmed, leaving enough of the season for its 30-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Yard Long Bean need?
Yard Long Bean needs full sun — a spot that catches at least 6 hours of direct summer sun a day. We haven't confirmed this against a published source yet. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Yard Long Bean need?
Yard Long Bean prefers soil pH 4 to 8.8, on well-drained ground. We haven't confirmed this against a published source yet. Your report scores your parcel's mapped soil against that using USDA SSURGO data.
Does Yard Long Bean attract pollinators?
Yes — yard long bean's flowers are a solid nectar source for honeybees and native bees. We haven't confirmed this against a published source yet.
Keep exploring Yard Long Bean
Yard Long Bean by USDA hardiness zone
Yard Long Bean state by state
Every state yard long bean's zone reaches — 15 link straight to that state's yard long bean growing page; the rest open the state's full growing guide.