Plant types and subtypes: Grasses, Prairie Grasses, Ornamental Grasses
Light Requirements: sun, part-sun
Water Use: low
Soil Moisture: dry, moist
Soil Description: average, loam, clay, sand, gravel/rock
Bloom Time: July, August, September
Bloom Color: purple
Leaf Color: green
Hardiness Zone: 5, 6, 7, 8, 9, 10
Additional Tags: attracts butterflies, colonizing, drought tolerant, fall interest, naturalizing, ornamental foliage, salt tolerant
Pricing & Availability
Tridens flavusAlso known as:
tall redtop tridens,
Tridens flavus is a tall, warm season bunchgrass. While the leaves might not grow longer than 2 1/2', the culms can easily grow to a height of 6' or more, and when planted in mass its purple spikelets will create a floating purplish haze.
Purpletop tridens is easy to grow. It prefers full sun, but is not particular about soil. It is adapted to moist to dry, well-drained soils that can be shallow, rocky, sandy, or sterile. It is also salt tolerant, which makes it a common sight along roadsides that are heavily treated during winter. The blooming period begins in mid-summer and lasts 1 to 2 weeks, with the ensuing spikelets persisting through late fall. Zones 5-10
Easy to propagate from seed. These should be sown in spring, after last frost.
This is a very attractive tall grass. It is also attractive to browsing mammals, however, its ability to self-seed makes it easy to establish permanent colonies.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, CA, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV
|Species||Tridens flavus||purpletop tridens|