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Ulvaceae family

Sea Lettuce Ulva pertusa

Sea Lettuce is an introduced plant, found in North America.

⚠ Invasive here — plant a native instead USDA + GBIF

Sea Lettuce 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.

Butterfly Weed
Native ★
Butterfly Weed
Asclepias tuberosa
●●●●●
New England Aster
Native ★
New England Aster
Symphyotrichum novae-angliae
●●●●●
Black-eyed Susan
Native
Black-eyed Susan
Rudbeckia hirta
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Vine Maple
Native
Vine Maple
Acer circinatum
●●●●●
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 11 derived from its U.S. range
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.
Sources for this entry (7) 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] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
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