Can I Grow Annual Lespedeza in Virginia?

USDA Zones 5b-8b · Plant zone range 5-9

Yes — Strong Match

annual lespedeza (zones 5-9) covers every zone Virginia contains (5b-8b), so hardiness is not what limits it anywhere in the state.

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Your yard isn't the whole zone.

Annual Lespedeza is grown as an annual, so your winter zone isn't the deciding factor — your frost-free window is. A typical Virginia site runs ~224 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 annual lespedeza against your land's actual frost dates, sun, and soil.

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Zone Comparison

Annual Lespedeza Needs

  • USDA Zones: 5-9
  • Frost-Free Days: 120+
  • Sun: Full Sun
  • Mature size: 1.5 ft tall
  • Drought tolerance: High

Virginia Has

  • USDA Zones: 5b-8b
  • Last Hard Freeze (28°F): Mar 22 - Apr 2
  • First Hard Freeze (28°F): Nov 2 - Nov 17
  • Annual Rainfall: 36-50 inches
  • Common Soils: Red clay (Piedmont), Silt loam, Sandy loam (Tidewater)

Plant Zone Range (zones 5-9)

5a
9b
3a (Cold)13b (Hot)

Preferred Soil pH

3.5 (Acidic)7.0 (Neutral)9.0 (Alkaline)
Highlighted range: pH 5.08.0

Plant data: USDA PLANTS Database / Growable Ground plant catalog. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.

When to Plant Annual Lespedeza in Virginia

The frost window

Across Virginia, the last spring hard freeze (28°F) clears between Mar 22 and Apr 2, and the first fall hard freeze lands between Nov 2 and Nov 17 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 214-day window you can count on — up to 240 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

Annual Lespedeza is direct-sown where it grows rather than started under cover, so there is no seed-tray head start to bank — Virginia'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.

Days to maturity vs. the window

At 120 days to maturity (USDA PLANTS Database), counting from the last hard freeze it ripens with 94 days to spare even in Virginia's tightest freeze scenario — room for a later start or a second sowing.

Timing tuned to sub-state frost dates — Highland County, not the statewide average.

Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: USDA PLANTS Database. 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 annual lespedeza survives winter here. Whether the season is long enough — and warm enough — is a different question.

Frost-free days

Annual Lespedeza wants 120+ frost-free days; a typical Virginia site sees ~224 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.

Growing degree days

Annual Lespedeza needs ~1800 GDD (base 50°F) to ripen. The state median runs ~3662 GDD (from PRISM 1991-2020 climate normals), so Virginia's typical season clears that easily.

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

Annual Lespedeza tolerates a wide pH range (pH 5-8) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in Virginia. 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 5.5 and 6 — worth knowing before you decide whether a Virginia soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your Virginia site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.

Your land, not the state average

Virginia's soils run mostly fine sandy loam, but SSURGO maps the series, texture, and drainage under your exact parcel. What matters for annual lespedeza is the horizon its roots actually work, not the surface. That map unit, not the state average, decides how annual lespedeza performs.

Check your parcel → Source: USDA NRCS SSURGO.

Plant pH and drainage requirements from USDA PLANTS Database. Virginia soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.

Annual Lespedeza in Virginia — Quick Answer

  • Verdict: Yes — Strong Match
  • Plant Zones: 5-9 (USDA PLANTS Database)
  • State Zones: 5b-8b (USDA ARS PHZM 2023)
  • Growing Season: 28°F hard freezes about Mar 22 - Apr 2 to Nov 2 - Nov 17 (NOAA Regional Climate Centers ACIS, 1991-2020)
  • Days to Maturity: 120 days

What Else to Consider for Annual Lespedeza in Virginia

Zone compatibility tells you about winter cold survival — but Virginia growers also need to think about:

Heavy Piedmont red clay requires amendment

Humidity and heat in summer promote disease

Deer pressure is heavy in suburban and rural areas

Growing annual lespedeza here specifically

Annual Lespedeza needs pH 5.0–8.0; Virginia's dominant fine sandy loam soils may or may not deliver that, so your parcel's SSURGO map unit is the real test.

Start with a soil test on your own ground and adjust pH and texture to fit annual lespedeza's 5.0–8.0 range. How to handle it →

What to actually do about these — and the constraints that apply to every Virginia grower, not just annual lespedeza — is covered on the Virginia growing guide.

Timing shifts within Virginia

Virginia isn't one climate. In Highland County, the last hard freeze (28°F) holds until about Apr 27 — roughly 30 days later than the recorded state median — so plant annual lespedeza to your county's window, not the statewide date.

Annual Lespedeza needs about 120 days of frost-free season to complete its cycle. Even Highland County — Virginia’s shortest season at 176 frost-free days — clears that by 56 days, so season length isn’t the constraint anywhere in Virginia. What varies is your own parcel.

Across Virginia’s 133 counties the frost-free season runs from 176 days in Highland County to 289 days in Hampton County — a spread of 113 days, which is why a single statewide planting date misleads. The median Virginia county sees 224 frost-free days, leaving annual lespedeza about 104 days of slack on a typical parcel — room for a second sowing where the season runs long.

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"). Annual Lespedeza's 120-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.

Where in Virginia Fits Best

Even within Virginia's zones 5b-8b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for annual lespedeza (USDA PHZM 2023):

Pollinator + Wildlife Value

Annual Lespedeza draws honeybees and native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, annual lespedeza can only work that bloom inside Virginia's frost window — roughly 224 days, opening after the last 28°F freeze (Mar 22 - Apr 2) and closing at the first (Nov 2 - Nov 17), per NOAA Regional Climate Centers ACIS, 1991-2020.

Virginia Cooperative Extension

For Virginia-specific cultivar recommendations, planting calendars, and pest pressure for annual lespedeza, the canonical source is Virginia Cooperative Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.

Is Annual Lespedeza native to Virginia?

No — the USDA PLANTS Database lists Annual Lespedeza as introduced rather than native in the Lower 48, so it is not part of Virginia's native flora. It grows here as a garden plant; pairing it with a few Virginia natives keeps local pollinators fed too.

Looking for plants that belong here? The Virginia 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 Annual Lespedeza in Virginia

When can I plant Annual Lespedeza in Virginia?

Virginia's last spring hard freeze (28°F) clears between Mar 22 and Apr 2, and the first fall hard freeze lands between Nov 2 and Nov 17 (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.

Can Annual Lespedeza mature before first frost in Virginia?

Yes — Annual Lespedeza matures in 120 days (USDA PLANTS Database), and Virginia's dependable hard-freeze-free window runs 214 days (NOAA Regional Climate Centers ACIS, 1991-2020), leaving 94 days of margin. Plant once the last hard freeze has passed — two to three weeks later for anything tender — and it ripens ahead of the first fall freeze.

What hardiness zone is Annual Lespedeza grown in across Virginia?

Virginia spans USDA hardiness zones 5b-8b (USDA ARS PHZM 2023). Annual Lespedeza carries a range of zones 5-9, so the overlap zones are where outdoor growing is most reliable.

How many frost-free days does a typical Virginia site have?

A typical Virginia site sees ~224 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Annual Lespedeza needs 120+ 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 Highland, the freeze-free season runs shorter than the state average, so verify your own county's window.

Is Annual Lespedeza native to Virginia?

No — the USDA PLANTS Database lists Annual Lespedeza as introduced rather than native in the Lower 48, so it is not part of Virginia's native flora. It grows here as a garden plant; pairing it with a few Virginia natives keeps local pollinators fed too.

How should I amend the soil for Annual Lespedeza in Virginia?

Annual Lespedeza tolerates pH 5-8 and well (dry spells) drainage (Growable Ground Plant Database). That is a 3-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a Virginia site — amend for drainage and organic matter first.

Will Annual Lespedeza actually grow on my specific land in Virginia?

State-level zone + climate data is a sketch. A Growable Ground parcel report scores annual lespedeza against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.

Free Report

Check your specific parcel in Virginia

State-level data is a sketch. Your Growable Ground report scores annual lespedeza against your parcel's exact soil, sun, drainage, and frost data — not zone averages.

Three things about your lot that Virginia annual lespedeza averages can't show:

Your soil pHYour frost-free days — Virginia averages 224Your sun & shade

We read public map data around Virginia — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources read at your address, not the Virginia annual lespedeza average

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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