Generally — Most Areas
boneset (zones 3-8) suits most of New Mexico (5a-9a) — zones 5-8 are in range, and the rest of the state is the exception.
Boneset in New Mexico — the short answer
Boneset in New Mexico: hardy in zones 3–8, against a state median of ~209 frost-free days.
- Plant zones
- 3-8
- 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
- New Mexico zones
- 5a-9a
- USDA PHZM 2023
- Frost window
- Mar 31 - Apr 19 – Oct 22 - Nov 9
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 144 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.
New Mexico spans zones 5a-9a, 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 boneset against your land's actual soil, sun, and frost.
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New Mexico is not one climate
A single New Mexico answer averages 33 counties whose growing seasons are 120 days apart — from 144 frost-free days in Catron County to 264 in Doña Ana County. Which end of that your land sits nearer changes what boneset can finish before the first hard freeze.
The middle half of 33 counties runs 186–221 days, with a median of 209 days — a 120-day span end to end.
Measured across 33 New Mexico 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 in New Mexico Fits Best
Boneset is rated for zones 3–8 — a cold floor USDA puts at -40 to -30°F. Against New Mexico’s 33 counties that band holds in 31 of them, and the line runs at Taos County (zone 5b), the coldest county still inside it.
Inside zones 3–8
31 counties
- Cibola County · zone 6a
- Colfax County · zone 6a
- Rio Arriba County · zone 6a
3 of 31 shown
Above the zone 8 ceiling
2 counties
- Doña Ana County · zone 8b
- Sierra County · zone 8b
Too little winter chill rather than too much cold — a low-chill selection is what changes it.
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.
Even within New Mexico's zones 5a-9a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for boneset (USDA PHZM 2023):
Zone Comparison
Boneset Needs
- USDA Zones: 3-8
- Mature size: 5 ft tall
- Picking window: ~30 days of harvest
- Drought tolerance: Low
New Mexico Has
- USDA Zones: 5a-9a
- Last Hard Freeze (28°F): Mar 31 - Apr 19
- First Hard Freeze (28°F): Oct 22 - Nov 9
- Annual Rainfall: 8-20 inches
- Common Soils: Sandy loam, Caliche, Adobe clay
Plant Zone Range (zones 3-8)
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 Boneset in New Mexico
The frost window
Across New Mexico, the last spring hard freeze (28°F) clears between Mar 31 and Apr 19, and the first fall hard freeze lands between Oct 22 and Nov 9 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 186-day window you can count on — up to 223 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
Those dates are when boneset goes out, not when it starts. It is sown under cover about 8 weeks ahead, so counting back from New Mexico's late-side last freeze of Apr 19 is what fixes your sowing date — and a yard that clears frost earlier than the state's late date starts earlier still.
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.
Soil + Drainage Fit
Drainage matters: this plant wants well (dry spells). If your New Mexico site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
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. New Mexico soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Boneset in New Mexico
Zone compatibility tells you about winter cold survival — but New Mexico growers also need to think about:
Very low rainfall requires irrigation for most crops
High altitude UV intensity can burn tender transplants
Alkaline soils limit plant selection without amendment
What to actually do about these — and the constraints that apply to every New Mexico grower, not just boneset — is covered on the New Mexico growing guide.
Where in New Mexico Boneset Is Zone-Hardy
Boneset is rated for USDA zones 3–8. 31 of New Mexico’s 33 counties fall inside that band. The coldest that does is Taos County at zone 5b. 2 counties sit above its zone 8 ceiling, where the limit is too little winter chill rather than too much cold. Where you are in New Mexico decides this one.
Across those 33 counties New Mexico’s winter-low ladder runs from zone 5b in Taos County to zone 8b in Sierra County — 3 USDA zones of spread, which is 30°F between the two counties’ average coldest night of the year. That is why a statewide hardiness answer is where you start and not where you finish.
The planting window moves with it. Catron County holds its last hard freeze (28°F) until about May 22, while Doña Ana County is clear by Feb 28 — 83 days apart. Set boneset out on your county’s date, not the state’s.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F killing freeze — earlier than the folk 32°F "last frost". Boneset’s zone 3–8 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
Boneset draws honeybees, native bees, and butterflies (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, boneset can only work that bloom inside New Mexico's frost window — roughly 209 days, opening after the last 28°F freeze (Mar 31 - Apr 19) and closing at the first (Oct 22 - Nov 9), per NOAA Regional Climate Centers ACIS, 1991-2020.
New Mexico Cooperative Extension
For New Mexico-specific cultivar recommendations, planting calendars, and pest pressure for boneset, the canonical source is NMSU Cooperative Extension Service. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Boneset native to New Mexico?
Boneset is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in New Mexico. It can still earn a place in a New Mexico garden — the zone comparison above tells you whether it will thrive.
Looking for plants that belong here? The New Mexico 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 Boneset in New Mexico
When can I plant Boneset in New Mexico?
New Mexico's last spring hard freeze (28°F) clears between Mar 31 and Apr 19, and the first fall hard freeze lands between Oct 22 and Nov 9 (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 Boneset grown in across New Mexico?
New Mexico spans USDA hardiness zones 5a-9a (USDA ARS PHZM 2023). Boneset carries a range of zones 3-8, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical New Mexico site have?
A typical New Mexico site sees ~209 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Boneset should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Boneset native to New Mexico?
Boneset is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in New Mexico. It can still earn a place in a New Mexico garden — the zone comparison above tells you whether it will thrive.
Will Boneset actually grow on my specific land in New Mexico?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores boneset 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 New Mexico
State-level data is a sketch. Your Growable Ground report scores boneset against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that New Mexico boneset averages can't show:
We read public map data around New Mexico — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the New Mexico boneset average
Explore More
Growing guides for boneset
Explore New Mexico county by county
New Mexico carries 33 counties with their own USDA zone — a sample of the growing pages for boneset there:
Where else boneset grows
Boneset's zone band crosses state lines — these are the states closest to New Mexico 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 New Mexico
New Mexico has a growing page for 1,038 plants — a rotating sample of the rest of the shelf.
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