cup plant

Silphium perfoliatum · Asteraceae · Wikipedia

Is this one for your yard?

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

Silphium perfoliatum has two rows covering ME and NY on the legal-list. That state-specific count opens the cup plant record without assigning the same legal status elsewhere.

Two climate assertions have separate trails in hardiness evidence. The accepted fire-source set is limited evidence, so hardiness does not substitute for fire support.

The evidence table preserves that final boundary while the legal and climate sections retain their own geography and purpose. This lets readers inspect two regulatory rows, two hardiness assertions, and the limited fire pack without merging their separate meanings here.

Form: perennial
Mature height: ~6 ft
Light: Full sun
Water need: high
Rated in: northeastern Minnesota

On this lot

1. Fire evidence and conditions

Fire evidence: Fire-resistant — location does not change the cited classification.
Fire-performance conditions
Fire ecology context
Placement evidence: 1 source placement record; source schemes remain separate.
Evidence regions: northeastern Minnesota
Maintenance

Typed publication scope: 1 scope across 1 cited fire source

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.

2. Why this plant is relevant here

State distribution: Documented in AL, AR, CT, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, ND, NE, NJ, NY, OH, OK, PA, SD, TN, VA, VT, WI, WV.
Native range: Current cited native range in AL, AR, CT, IA, IL, IN, KS, KY, LA, MA, MI, MN, MO, MS, NC, ND, NE, NJ, NY, OH, OK, PA, SD, TN, TX, VA, VT, WI, WV.
Introduced / established
USDA hardiness: 2 applicable cited hardiness statements overlap but have different boundaries; compare each complete source row.

3. Legal, ecological, and broader status

Legal-list status: 2 legal-list records; the Place chip matches exact scope.
Seed-list status
Reported invasive here
Broader regional context
Federal context

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

29

exact source areas

Current introduced

0

exact source areas

Qualified

0

doubtful or extinct source rows

29 native source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04

Alabama (AL)
Arkansas (AR)
Connecticut (CT)
Iowa (IA)
Illinois (IL)
Indiana (IN)
Kansas (KS)
Kentucky (KY)
Louisiana (LA)
Massachusetts (MA)
Michigan (MI)
Minnesota (MN)
Missouri (MO)
Mississippi (MS)
North Carolina (NC)
North Dakota (ND)
Nebraska (NE)
New Jersey (NJ)
New York (NY)
Ohio (OH)
Oklahoma (OK)
Pennsylvania (PA)
South Dakota (SD)
Tennessee (TN)
Texas (TX)
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.

Landscaping for Wildfire Defensible Space in Northeastern Minnesota (Firewise) · record table-2-row-13 · 2017 · as of 2026-08-26

4–8 explicit range · whole zone precision · source stated

Source taxon: Silphium perfoliatum · exact match.

Source location: Table 2 row 13, Hardiness Zones column.
USDA PLANTS Database — Plant Characteristics · record SIPE2 · PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23 · as of 2026-08-26

Minimum 2a · no upper limit documented · half zone precision · derived containing band

Exact source measurement: -49°F; mapped only to its containing half-zone.

Source taxon: Silphium perfoliatum · source identifier match.

Source location: PlantCharacteristics record 39867, Temperature, Minimum (°F).

Legal restrictions and listings.

ME · prohibited · Specified living-plant trade activities prohibited since 2024-01-01 · Authority: Maine Department of Agriculture, Conservation and Forestry. Source: Maine Chapter 273 Do Not Sell and Special Concern Lists , record maine:prohibited:060, 2026-08-26.

activity restriction: Living viable material may not be imported, exported, bought, sold, or intentionally propagated for sale or distribution. (official condition)
permit required: The State Horticulturist may permit importation and field experimentation for scientific, educational, or other approved purposes under prescribed conditions. (official condition)
material scope exception: Preserved herbarium specimens and material preserved by other means are exempt from Chapter 273. (official condition)

NY · prohibited · Prohibited invasive species — specified possession, trade, transport, introduction, propagation, and disposal rules · Authority: New York State Department of Environmental Conservation. Source: New York 6 NYCRR Part 575 Prohibited and Regulated Invasive Species , record new-york:part-575:plant:067, 2026-08-26.

activity restriction: No person may knowingly possess this prohibited invasive species with intent to sell, import, purchase, transport, or introduce it; sale, import, purchase, transport, introduction, and propagation are prohibited, and disposal must render it nonliving and nonviable. (official condition)
operational exception: Possession or transport for identification or disposal, and control or management of pre-existing invasive species, remain exempt when handled within Part 575's no-spread boundary. (official condition)
permit required: A New York State Department of Environmental Conservation permit is required to carry out a prohibited activity for research, education, or another approved activity: possession with intent to sell, import, purchase, transport, or introduction. (official condition)

Legal designations are separate from ecological invasion reports and fire performance. Read the named class, taxonomic scope, authority, and operating conditions before acting.

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.

Landscaping for Wildfire Defensible Space in Northeastern…: plantable 3-30 ft from a building [Dovetail Partners planting distance] (with its recommendation)

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.

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

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

Silphium perfoliatum (Cup Plant). FireApproved. https://fireapproved.com/plants/silphium-perfoliatum/. Last verified 2026-08-23.