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Wildflower Center Staff
Tridens flavus (L.) Hitchc.
Purpletop tridens, Redtop tridens, Tall redtop tridens, Purpletop, Redtop, Tall redtop
Poaceae (Grass Family)
USDA Symbol: TRFL2
USDA Native Status: L48 (N), CAN (I)
Tall redtop or Purple-top is a 2 1/2-7 ft. tall perennial grass with drooping branches bearing widely spaced reddish-purple spikelets. In mass, this species puts a purple top on old fields and open woods. The plant becomes brown in fall.
Bloom InformationBloom Color: Purple
Bloom Time: Aug , Sep , Oct , Nov
, WV Native Distribution:
s. to Mex. Native Habitat:
Roadsides, Open woodlands
Growing ConditionsWater Use: Low
Light Requirement: Part Shade
Soil Moisture: Dry
CaCO3 Tolerance: Low
Soil Description: Dry soils. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay
Conditions Comments: During early growth it is readily consumed by livestock.
BenefitUse Ornamental: Attractive
Use Wildlife: Graze, Nesting material.
Larval Host: Cross-line skipper, Broad-winged skipper, Little Glassywing skipper, Large Wood Nymph.
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Edge of the Woods Native Plant Nursery
- Orefield, PA
Record Last Modified: 2012-12-09
Research By: LAL