Unlikely — Zone Mismatch
phasey bean (zones 9-13) does not overlap with Connecticut's zone range (6a-7b). Growing outdoors is unlikely without significant protection.
2 zones short — what would close it
Phasey Bean is hardy to zone 9, and the warmest ground in Connecticut is zone 7 — 2 zones short. Planted in open ground it will not survive a Connecticut winter. To grow it here, grow phasey bean in an earth-sheltered greenhouse — its modeled 2.5-zone lift covers this gap.
An earth-sheltered greenhouse is the lift this needs. How a greenhouse changes what you can grow →
Zone math from 9-13 (plant) against 5-7 (Connecticut). Lift modeled by crop_engine.GREENHOUSE_ZONE_MODIFIER_BY_SUBTYPE['earth_sheltered'] (+2.5 zones) via api/fast_sections.py Unlock Engine v2.
Phasey Bean in Connecticut — the short answer
Phasey Bean in Connecticut: hardy in zones 9–13, full sun, against a state median of ~207 frost-free days.
- Plant zones
- 9-13
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- Connecticut zones
- 6a-7b
- USDA PHZM 2023
- Frost window
- Mar 31 - Apr 11 – Oct 30 - Nov 3
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 191 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
Phasey Bean is grown as an annual, so your winter zone isn't the deciding factor — your frost-free window is. A typical Connecticut site runs ~207 frost-free days, but that is a state median, not your yard: slope, trees, and low spots move the last-frost date across a single parcel. Enter your address and we'll score phasey bean against your land's actual frost dates, sun, and soil.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Connecticut is not one climate
A single Connecticut answer averages 9 counties whose growing seasons are 48 days apart — from 191 frost-free days in Northwest Hills County to 239 in Greater Bridgeport County. Which end of that your land sits nearer changes what phasey bean can finish before the first hard freeze.
The middle half of 9 counties runs 202–216 days, with a median of 207 days — a 48-day span end to end.
Measured across 9 Connecticut counties. NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where Phasey Bean Stands in Connecticut
Phasey Bean is rated for zones 9–13 — a cold floor USDA puts at 20 to 30°F. No Connecticut county sits inside it, so in open ground this is a grown-under-cover plant here rather than a bed plant — which is a statement about Connecticut winters, not about phasey bean.
Below the zone 9 floor
9 counties
- Northwest Hills County · zone 6a
- Capitol County · zone 6b
- Lower Connecticut River Valley County · zone 6b
3 of 9 shown
Winter cold is the limit here — the same plant works in a container that comes under cover.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. A zone is a 10°F band of average annual extreme minimum temperature, so the floor above is the band the plant's rating denotes, not a single measured kill point. Slope, shelter and cold-air drainage routinely move a site half a zone either way from its county figure — which is the part only your address resolves.
Zone Comparison
Phasey Bean Needs
- USDA Zones: 9-13
- Frost-Free Days: 90+
- Sun: Full Sun
- Mature size: 3 ft tall
- Drought tolerance: Medium
Connecticut Has
- USDA Zones: 6a-7b
- Last Hard Freeze (28°F): Mar 31 - Apr 11
- First Hard Freeze (28°F): Oct 30 - Nov 3
- Annual Rainfall: 44-52 inches
- Common Soils: Glacial till, Sandy loam, River valley silt
Plant Zone Range (zones 9-13)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Phasey Bean in Connecticut
The frost window
Across Connecticut, the last spring hard freeze (28°F) clears between Mar 31 and Apr 11, and the first fall hard freeze lands between Oct 30 and Nov 3 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 202-day window you can count on — up to 217 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
When to start the seed
Phasey Bean is direct-sown where it grows rather than started under cover, so there is no seed-tray head start to bank — Connecticut's dates above are the whole calendar for it. That makes the last-freeze date the binding constraint, and a warmer pocket of your own yard is worth more to this crop than it is to a transplanted one.
Timing tuned to sub-state frost dates — Northwest Hills County, not the statewide average.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
The zone check says phasey bean does not survive a Connecticut winter in the ground. The season figures below measure a different question — whether it could finish a season here at all — and they only bear on Connecticut under protection.
Frost-free days
Phasey Bean wants 90+ frost-free days; a typical Connecticut site sees ~207 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
GDD and chill-hour figures are computed from PRISM 1991-2020 monthly climate normals; frost-free days from NOAA Regional Climate Centers ACIS, 1991-2020. Each is the state median across its counties (P25/P75 span the within-state spread). Hardiness-zone range is USDA PHZM 2023.
Soil + Drainage Fit
Phasey Bean tolerates a wide pH range (pH 4.5-8) — 3.5 units, acid ground through alkaline — so soil acidity is rarely what limits it in Connecticut. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 6 and 7 — worth knowing before you decide whether a Connecticut soil test result is a problem or just a number. Drainage matters: this plant wants poorly (saturated >50% of year), well (dry spells). If your Connecticut site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
County soil mapping is limited for Connecticut, so a direct soil test on your own parcel — pH, texture, and drainage — is the real answer for whether phasey bean will thrive there.
Check your parcel → Source: USDA NRCS SSURGO (county summary limited).
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. Connecticut soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Phasey Bean in Connecticut
Zone compatibility tells you about winter cold survival — but Connecticut growers also need to think about:
Rocky glacial soils require clearing and amendment
Short growing season in northern hills
Deer pressure is high in suburban areas
What to actually do about these — and the constraints that apply to every Connecticut grower, not just phasey bean — is covered on the Connecticut growing guide.
Timing shifts within Connecticut
Connecticut isn't one climate. In Northwest Hills County, the last hard freeze (28°F) holds until about Apr 19 — roughly 12 days later than the recorded state median — so plant phasey bean to your county's window, not the statewide date.
Phasey Bean needs about 90 days of frost-free season to complete its cycle. Even Northwest Hills County — Connecticut’s shortest season at 191 frost-free days — clears that by 101 days, so season length isn’t the constraint anywhere in Connecticut. What varies is your own parcel.
County last-freeze dates and frost-free day counts: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). Phasey Bean's 90-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Phasey Bean draws honeybees and native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, phasey bean can only work that bloom inside Connecticut's frost window — roughly 207 days, opening after the last 28°F freeze (Mar 31 - Apr 11) and closing at the first (Oct 30 - Nov 3), per NOAA Regional Climate Centers ACIS, 1991-2020.
Connecticut Cooperative Extension
For Connecticut-specific cultivar recommendations, planting calendars, and pest pressure for phasey bean, the canonical source is UConn Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Phasey Bean native to Connecticut?
No — the USDA PLANTS Database lists Phasey Bean as introduced rather than native in the Lower 48, so it is not part of Connecticut's native flora. It grows here as a garden plant; pairing it with a few Connecticut natives keeps local pollinators fed too.
Looking for plants that belong here? The Connecticut growing guide lists USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Phasey Bean in Connecticut
When can I plant Phasey Bean in Connecticut?
Connecticut's last spring hard freeze (28°F) clears between Mar 31 and Apr 11, and the first fall hard freeze lands between Oct 30 and Nov 3 (NOAA Regional Climate Centers ACIS, 1991-2020). Time outdoor planting to after the last hard freeze for your specific site — a further two to three weeks for anything tender — and count back from those dates for transplant scheduling.
What hardiness zone is Phasey Bean grown in across Connecticut?
Connecticut spans USDA hardiness zones 6a-7b (USDA ARS PHZM 2023). Phasey Bean carries a range of zones 9-13, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Connecticut site have?
A typical Connecticut site sees ~207 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Phasey Bean needs 90+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Northwest Hills, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Phasey Bean native to Connecticut?
No — the USDA PLANTS Database lists Phasey Bean as introduced rather than native in the Lower 48, so it is not part of Connecticut's native flora. It grows here as a garden plant; pairing it with a few Connecticut natives keeps local pollinators fed too.
How should I amend the soil for Phasey Bean in Connecticut?
Phasey Bean tolerates pH 4.5-8 and poorly (saturated >50% of year), well (dry spells) drainage (FAO ECOCROP). That is a 3.5-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a Connecticut site — amend for drainage and organic matter first.
Will Phasey Bean actually grow on my specific land in Connecticut?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores phasey bean against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Connecticut
State-level data is a sketch. Your Growable Ground report scores phasey bean against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Connecticut phasey bean averages can't show:
We read public map data around Connecticut — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Connecticut phasey bean average
Explore More
Growing guides for phasey bean
Explore Connecticut county by county
Connecticut carries 9 counties with their own USDA zone — a sample of the growing pages for phasey bean there:
Where else phasey bean grows
Phasey Bean's zone band crosses state lines — these are the states closest to Connecticut in winter climate where it also has a page, plus the far ends of its range. Each one re-answers the question with that state's own record.
More to grow in Connecticut
Connecticut has a growing page for 893 plants — a rotating sample of the rest of the shelf.
Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →
Cite this dataset
Kirchick, M. (2026). Growable Ground Plant Database [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21435643
Licensed CC BY-NC 4.0. DOI 10.5281/zenodo.21435643
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