Generally — Most Areas
foxglove (zones 4-8) partially overlaps with Michigan (4a-6b). It can grow in zones 4-6 within the state.
Your yard isn't the whole zone.
Michigan spans zones 4a-6b, but your yard has its own microclimate — slope, trees, and low spots shift frost and sun across a single parcel. Enter your address and we'll score foxglove against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Zone Comparison
Foxglove Needs
- USDA Zones: 4-8
- Soil pH: 4.5 - 8.3
- Sun: Full Sun
- Drainage: well (dry spells), excessive (dry/moderately dry)
- Frost-Free Days: 150+
Michigan Has
- USDA Zones: 4a-6b
- Last Frost: Apr 20 - May 30
- First Frost: Sep 15 - Oct 20
- Annual Rainfall: 28-38 inches
- Common Soils: Sandy loam, Clay loam, Muck
Plant Zone Range (zones 4-8)
Preferred Soil pH
Plant data: USDA PLANTS Database / plant_species_v5.csv. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Foxglove in Michigan
The frost window
Across Michigan, the last spring frost clears between Apr 20 and May 30, and the first fall frost lands between Sep 15 and Oct 20 (NOAA Climate Normals 1991-2020). Counting from the latest last frost to the earliest first frost, that's a 108-day window you can count on — up to 183 days on a mild site in a kind year.
Frost tenderness
Foxglove is frost-tender — its listed minimum temperature is 37.4°F (USDA PLANTS Database) — so set plants out after the last frost has cleared your local site, not the state's earliest date.
Timing tuned to sub-state frost dates — Baraga 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
Zone compatibility says you can survive winter here. Whether the growing season is long enough — and warm enough — is a different question.
Frost-free days
Foxglove wants 150+ frost-free days; a typical Michigan site sees ~170 (NOAA Climate Normals). That leaves a workable window — start indoors to bank time.
Climate aggregates derive from USDA NRCS county-level hardiness data + Cornell CALS Extension GDD-by-region tables + MSU Extension chill-hours-by-zone (1991-2020 NOAA Climate Normals baseline).
Soil + Drainage Fit
Foxglove likes near-neutral soil (pH 4.5-8.3). That's the common-ground band across Michigan's sandy loam and clay loam — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells), excessive (dry/moderately dry). If your Michigan site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
Whether foxglove thrives in Michigan comes down to drainage, and SSURGO drainage class flips from well-drained to poorly-drained parcel to parcel — your soil map unit, not the state average, is the real answer.
Check your parcel → Source: USDA NRCS SSURGO.
Plant pH and drainage requirements from USDA PLANTS Database. Michigan soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Foxglove in Michigan — Quick Answer
- Verdict: Generally — Most Areas
- Plant Zones: 4-8 (USDA PLANTS Database)
- State Zones: 4a-6b (USDA ARS PHZM 2023)
- Growing Season: Apr 20 - May 30 to Sep 15 - Oct 20 (NOAA Climate Normals)
What Else to Consider
Zone compatibility tells you about winter cold survival — but Michigan growers also need to think about:
Lake effect weather creates highly localized microclimates
Lake effect rewrites the map mile by mile — check your exact site, not your region, before you commit a planting plan.
Short northern season (100-120 frost-free days in UP)
Up north, fast-maturing varieties plus a hoop house or cold frame turn a tight season into a dependable one.
Sandy soils in western MI drain too quickly
Compost and cover crops, applied annually, teach sandy ground to hold water — the west-side fix is organic matter.
Growing foxglove here specifically
Foxglove likes pH 4.5–8.3 and takes cold to about 37°F, yet neither saves it from wet feet — SSURGO maps about 29.4% of Michigan poorly-drained, where its roots sit and rot.
Set foxglove high on bermed, grit-amended ground so winter and storm water drain away from the roots. How to handle it →
Timing shifts within Michigan
Michigan isn't one climate. In Baraga County, the last hard freeze (28°F) holds until about May 1 — roughly 19 days later than the recorded state median — so plant foxglove to your county's window, not the statewide date.
County last-freeze dates: NOAA/PRISM Climate Normals 1991-2020, 28°F threshold (earlier than the folk 32°F "last frost"). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Foxglove draws pollinators (high value, USDA PLANTS Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Deer pressure is meaningful across much of Michigan; foxglove is listed as deer-resistant (USDA PLANTS Database), which makes it a safer pick for unfenced sites. Our deer & wildlife guide carries the full deer-resistant list and how to protect the rest.
Good to Know Before You Plant Foxglove
Foxglove is listed as toxic to dogs, cats, horses (all) at a lethal level (ASPCA). Most listed plants only cause brief upset — a raised bed or a fenced corner usually keeps curious pets clear.
Recommended Foxglove Varieties for Michigan
Michigan publishes no state variety trial for foxglove, so we won't invent a "best for Michigan" list. Choose types rated to your USDA hardiness zone (4a-6b), and confirm winter survival and drainage against your own parcel.
Michigan Cooperative Extension
For Michigan-specific cultivar recommendations, planting calendars, and pest pressure for foxglove, the canonical source is MSU Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Foxglove native to Michigan?
No — the USDA PLANTS Database lists Foxglove as introduced rather than native in the Lower 48, so it is not part of Michigan's native flora. It grows here as a garden plant; pairing it with a few Michigan natives keeps local pollinators fed too.
Looking for plants that belong here? The Michigan 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 Foxglove in Michigan
When can I plant Foxglove in Michigan?
Michigan's last spring frost clears between Apr 20 and May 30, and the first fall frost lands between Sep 15 and Oct 20 (NOAA Climate Normals 1991-2020). Foxglove is frost-tender — its listed minimum temperature is 37.4°F (USDA PLANTS Database) — so wait until the last frost has cleared your specific site before planting out.
What hardiness zone is Foxglove grown in across Michigan?
Michigan spans USDA hardiness zones 4a-6b (USDA ARS PHZM 2023). Foxglove carries a range of zones 4-8, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Michigan site have?
A typical Michigan site sees ~170 frost-free days per year (derived from NOAA Climate Normals 1991-2020). Foxglove needs 150+ 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 Baraga, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Foxglove native to Michigan?
No — the USDA PLANTS Database lists Foxglove as introduced rather than native in the Lower 48, so it is not part of Michigan's native flora. It grows here as a garden plant; pairing it with a few Michigan natives keeps local pollinators fed too.
How should I amend the soil for Foxglove in Michigan?
Foxglove prefers pH 4.5-8.3 and well (dry spells), excessive (dry/moderately dry) drainage (USDA PLANTS Database). That sits in the common-ground band across Michigan soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Foxglove actually grow on my specific land in Michigan?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores foxglove 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 Michigan
State-level data is a sketch. Your Growable Ground report scores foxglove against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
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.
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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 →