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United States / Grow / butterfly milkweed

butterfly milkweed (Asclepias tuberosa)
Photo: (c) Michael J. Papay, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

butterfly milkweed

Asclepias tuberosa · Apocynaceae · all Asclepias records · also called Orange butterfly weed · Wikipedia

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Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.

Butterfly milkweed is rated fire resistant, with low flammability guidance and favorable numerical scores.

Ohio State University Extension gives Asclepias tuberosa an L grade, placing it toward the lower end of its flammability scale. Its accompanying description notes drought tolerance, intolerance of shade, and poor adaptation to mass plantings. Those details help interpret the landscape recommendation for this perennial rather than treating a favorable fire grade as the sole planting criterion.

Idaho Firewise records a fire-resistance score of eight out of ten. Colorado State University Extension and the Colorado State Forest Service preserve an eight on their ignitability scale, meeting the 8-to-10 interval recommended for defensible-space Zones 1 and 2. The Colorado guidance credits Idaho materials, so these scores should not be presented as wholly independent trials.

Dovetail Partners also rates butterfly milkweed low, and the Pacific Northwest extension guide and Oregon's perennial gallery list it favorably. The several kinds of support point toward the fire-resistant classification while retaining the growing conditions in Ohio's description.

Form
perennial
Mature height
~2 ft
Water need
low
Rated in
Colorado / Rocky Mountain Front Range; Maryland, New Jersey, and West Virginia; NC; North Carolina +6
On this lot

1. Fire evidence and conditions

Fire evidence
Fire-resistant — location does not change the cited classification.
Placement evidence
6 source placement records; source schemes remain separate.
Evidence regions
Colorado / Rocky Mountain Front Range; Maryland, New Jersey, and West Virginia; NC; North Carolina; North Carolina / southeastern US; OR/WA/ID; Ohio / Midwest; Pacific Northwest (Oregon / Washington / Idaho); northeastern Minnesota; southern Idaho / Intermountain
Typed publication scope: 9 scopes across 7 cited fire sources
  • Ignition-Resistant Landscape Plants (Fact Sheet 6.305) · Official scoped edition
    • CO; partial normalized coverage · 2025-07-01

      Colorado State University Extension and the Colorado State Forest Service publish Fact Sheet 6.305 for Colorado's WUI and varied ecosystems. FireApproved exposes all 114 exact source owners at Colorado publication scope while retaining score, elevation, water, and Idaho-carrier lineage. Publication scope is not suitability for every Colorado site or zone.

  • Landscaping for Wildfire Defensible Space in Northeastern Minnesota (Firewise) · Official scoped edition
    • Northeastern Minnesota (MN footprint); partial normalized coverage · 2017-01-01

      Dovetail applies the UF/IFAS flammability key to northeastern Minnesota natives and publishes placement for 38 exact source owners. FireApproved exposes those rows only as northeastern Minnesota regional context and preserves the 3-to-30-foot versus beyond-30-foot source placement.

  • Fire Resistance of Plants Master Database · Official scoped edition
    • Southern Idaho (ID footprint); partial normalized coverage · 2013-11-08

      The official database labels itself "For Southern Idaho" and describes Idaho residents at the urban-rangeland interface. FireApproved publishes 419 existing plant owners that cite its scored rows. This bounded Southern Idaho scope is regional context, not statewide coverage or a conclusion that the score transfers unchanged to every Idaho site.

  • Firewise Landscaping Plants (Maryland, New Jersey, and West Virginia editions) · Official scoped edition
    • MD; partial normalized coverage · 2015-01-08

      Maryland Forest Service says the list contains plants that can be grown in Maryland and identifies Maryland natives. FireApproved publishes 169 exact source owners from the 180 printed rows; an unrepresentable form and duplicate-owner rows are not broadened. The list calls itself non-comprehensive and does not establish suitability for every Maryland site.

    • NJ; partial normalized coverage

      New Jersey DEP publishes a state edition saying the listed plants can be grown in New Jersey and are relatively resistant to fire. Its same 180 printed taxon occurrences map to the 169 conservative owners already normalized for the template family. The list is non-comprehensive and does not establish suitability for every New Jersey site or override the Pinelands Commission's separate placement and fuel-break rules.

    • WV; partial normalized coverage · 2026-08-26

      West Virginia Division of Forestry publishes a state edition saying the listed plants can be grown in West Virginia and are relatively resistant to fire. Its same 180 printed taxon occurrences map to the 169 conservative owners already normalized for the template family. The list is non-comprehensive and provides no comparative or site-specific rating.

  • Fire-Resistant Landscaping in North Carolina (AG-874) · Official scoped edition
    • NC; complete normalized coverage · 2025-03-26

      The complete three-table AG-874 plant list is explicitly for North Carolina and contains 202 low-, medium-, or high-flammability rows. FireApproved accounts for all source rows under its strict taxonomy and lineage rules; source scope does not establish local suitability at a particular North Carolina site.

  • Firewise Landscaping (OSU Extension Bulletin 921) · Official scoped edition
    • OH; partial normalized coverage · 2006-03-01

      Ohio State University Extension Bulletin 921 is an Ohio publication that describes Ohio fire seasons and landscape conditions and labels nativity to Ohio. FireApproved publishes 352 exact source-owning plant records from its eight rated tables. This historical publication scope does not assert current extension endorsement or that a listed plant suits every Ohio site.

  • Fire-Resistant Plants for Home Landscapes (PNW 590) · Official scoped edition
    • ID, OR, WA; partial normalized coverage · 2023-10-01

      The October 2023 joint Pacific Northwest Extension publication explicitly names Oregon, Washington, and Idaho and publishes more than 150 plant profiles. FireApproved has normalized 155 exact plant records from the source; publication scope does not assert that every listed plant suits every site within the three states.

2. Why this plant is relevant here

State distribution
Documented in AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV.
Native range
Current cited native range in AL, AR, AZ, CO, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV.
USDA hardiness
3 applicable cited hardiness statements overlap but have different boundaries; compare each complete source row.

3. Legal, ecological, and broader status

How to read this page

The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.

Native and introduced range evidence

These are exact U.S. botanical-area records from the cited range source. Native and introduced describe biogeographic relationship, not fire performance or planting approval. Doubtful and extinct rows stay visible but do not count as current presence.

Current native

41

exact source areas

Current introduced

0

exact source areas

Qualified

0

doubtful or extinct source rows

41 native source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04
  • Alabama (AL)
  • Arkansas (AR)
  • Arizona (AZ)
  • Colorado (CO)
  • Connecticut (CT)
  • District of Columbia (DC)
  • Delaware (DE)
  • Florida (FL)
  • Georgia (GA)
  • Iowa (IA)
  • Illinois (IL)
  • Indiana (IN)
  • Kansas (KS)
  • Kentucky (KY)
  • Louisiana (LA)
  • Massachusetts (MA)
  • Maryland (MD)
  • Maine (ME)
  • Michigan (MI)
  • Minnesota (MN)
  • Missouri (MO)
  • Mississippi (MS)
  • North Carolina (NC)
  • Nebraska (NE)
  • New Hampshire (NH)
  • New Jersey (NJ)
  • New Mexico (NM)
  • New York (NY)
  • Ohio (OH)
  • Oklahoma (OK)
  • Pennsylvania (PA)
  • Rhode I. (RI)
  • South Carolina (SC)
  • South Dakota (SD)
  • Tennessee (TN)
  • Texas (TX)
  • Utah (UT)
  • Virginia (VA)
  • Vermont (VT)
  • Wisconsin (WI)
  • West Virginia (WV)

The lossless worldwide derivative is retained once in the research corpus; object pages repeat only exact U.S. areas needed by the local lens. The JSON twin carries the same page assertions.

Plant hardiness evidence

These values describe the plant source. Your ZIP zone comes from the separate 2023 USDA Plant Hardiness Zone Map. Whole-zone values stay whole-zone, and a single unresolved value is not treated as a tolerance range. Different source boundaries stay separate: overlapping statements are compared independently, while only ranges with no shared zone are called a conflict.

Where its sources say to plant it

Placement rules below use each source's own distances or named zones, tied to its rating. They are not interchangeable with the directory's current Zone 0 guidance.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Recommends (7)

Corroboration (1 rows from 1 source)

  • Firewise Landscaping Plants (Maryland, New Jersey, and West Virginia editions) — Maryland DNR, New Jersey DEP, and West Virginia Division of Forestry · 2015 archived PDF · original source Corroboration Compilation lineage: md-nj-wv-template-family

    “relatively resistant to fire”

    Listed as Asclepias tuberosa (Butterfly Weed). The source says listed species exhibit stronger resistance to ignition by wildfires. Source comments: Plants are poisonous – do not eat. Drought tolerant; shade intolerant

Mid-scale / conditional (3)

Corroboration (1 rows from 1 source)
Same genus in the directory · the Asclepias group page

Guides that discuss this plant

Last verified 2026-08-23. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF · iNaturalist · Wikidata · Wikipedia · ITIS

Asclepias tuberosa (Orange butterfly weed). FireApproved. https://fireapproved.com/plants/asclepias-tuberosa/. Last verified 2026-08-23.