Quick answer: 18 native plants for wet soil and rain gardens are native to Maine, 14 with a live listing as of 16 Sep 2026.
18 species
- American holly Ilex opaca · 24 states
- Atlantic white cedar Chamaecyparis thyoides · 12 states
- Bur oak Quercus macrocarpa · 24 states
- Canadian serviceberry Amelanchier canadensis · 17 states
- Cardinal flower Lobelia cardinalis · 37 states
- Cinnamon fern Osmunda cinnamomea · 13 states
- Foxglove beardtongue Penstemon digitalis · 31 states
- Gray birch Betula populifolia · 9 states
- Great blue lobelia Lobelia siphilitica · 32 states
- Ostrich fern Matteuccia struthiopteris · 8 states
- Royal fern Osmunda regalis var. spectabilis · 8 states
- Scarlet beebalm Monarda didyma · 18 states
- Silver maple Acer saccharinum · 18 states
- Southern arrowwood Viburnum dentatum · 13 states
- Swamp rose Rosa palustris · 11 states
- Tamarack Larix laricina · 10 states
- White baneberry Actaea pachypoda · 16 states
- Witherod viburnum Viburnum nudum var. cassinoides · 3 states