Euthamia caroliniana (Coastal Plain Grass-Leaved Goldenrod)

One of the few goldenrods genuinely suited to standing water, coastal plain grass-leaved goldenrod combines an unusually long late-season bloom window with confirmed value for several named specialist native bee species - a strong, well-behaved choice for sunny rain gardens and pond edges.

Species Overview

Euthamia caroliniana, also known as slender goldentop or coastal plain grass-leaved goldenrod, is a native herbaceous perennial found in the coastal plain areas, with a fine texture, grass-like leaves with tiny resin dots, and soft yellow flowers with a long bloom season from late summer to early winter. Unlike many goldenrods, this species loves water and grows best in open wetlands.

Application

• Rain garden and sunny pond-edge plantings - genuinely water-loving among goldenrods
• Swale and culvert plantings
• Late-season pollinator habitat, particularly for specialist native bees
• Coastal plain wetland restoration

Growing Conditions / Specification Data

• Light: Full Sun to Part Shade
• Soil/Moisture Tolerance: Wet, boggy, sandy, acidic soils; tolerates most soils except dry ones
• Plant Type: Forb
• Mature Height: 2-4 ft.
• Fall Color: Insignificant/None
• Bloom Color / Period: Yellow; August-November
• Wetland Indicator Status: FAC (Facultative)
• Native Range: Southern Maine south to southern Florida, west to southeastern Louisiana; mainly along the southeast coastal plain
• Hydrology: Dry-Mesic
• Root Depth: Shallow (Under 12 in.)
• Salinity Tolerance: Low
• Growth Rate: Moderate
• Drought Tolerance: High
• Flood Tolerance: Low - A dry, sandy-soil goldenrod relative; not tolerant of standing water.
• Shade Tolerance: Intolerant
• Growth Habit: Clumping/Mounding
• USDA Hardiness Zones: 5-9
• Deer Resistance: Yes (Rarely Damaged)
• Pollinator Value: Supports bees, supports specialist/oligolectic bees

Planting Guidance

• Spreads by rhizome to form attractive clumps but can become weedy if left unmanaged - divide every 2-3 years to control growth.