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Asteraceae family

Simple-stem Everlasting Gamochaeta simplicicaulis

Simple-stem Everlasting is an introduced plant, found in the lower 48 states.

More about this plant

Gamochaeta simplicicaulis, the simple-stem cudweed or simple-stem everlasting, is a species of flowering plant in the family Asteraceae. It is native to South America and has become naturalized in Australia, New Zealand, and the southeastern United States. Wikipedia →

⚠ Invasive here — plant a native instead USDA + GBIF

Simple-stem Everlasting is flagged invasive in the U.S. These natives fill a similar niche — same growth habit, bloom season, height, and region — so you keep the look and feed local wildlife instead of spreading a problem.

Swamp Milkweed
Native ★
Swamp Milkweed
Asclepias incarnata
●●●●●
Butterfly Weed
Native ★
Butterfly Weed
Asclepias tuberosa
●●●●●
Black-eyed Susan
Native
Black-eyed Susan
Rudbeckia hirta
●●●●●
Southern Sugar Maple
Native
Southern Sugar Maple
Acer floridanum
●●●●●
Matched on growth habit · bloom months · mature height · shared U.S. range (USDA + GBIF) — a starting point, not a prescription.

Growing & care

USDA PLANTS · TRY
Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
Hardiness
≥ zone 9 derived from its U.S. range
Size & form
Sources · Size & form
TRY Plant Trait Database (CC BY 4.0) — Foliage
Foliage
Broadleaf
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.

Wildlife & pollinators

How pollinator value is scored →
❧ Caterpillar hosts ~3 caterpillar species

Gamochaeta supports ~3 caterpillar species.

Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a modest genus.

Recorded feeding on Gamochaeta in North America, including:

Platynota rostrana · Omnivorous Platynota Moth
Keystone count (genus-level) from Warren II 2026 (CC0) · Tallamy host-use records. Named species (a documented Nearctic sample, not exhaustive) from NHM HOSTS (CC0).
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (14) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — US-RIIS v2.0 (USGS)
[07] Description — Wikipedia (CC BY-SA)
[08] Ecological value — Warren II 2026 (CC0) · Tallamy host-use counts
[10] Functional traits — TRY Plant Trait Database (CC BY 4.0)
[11] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[12] Caterpillar host count — Warren II 2026 (Dryad, CC0) · Tallamy host-use counts
[13] Caterpillar species — NHM HOSTS (CC0)
[14] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
Spot an error or have a better photo? Every field links to its source, and the whole dataset is open.
Cite this page Open data, please attribute

PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).

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