Purple Lovegrass (Eragrostis Spectabilis)

Purple Lovegrass (Eragrostis Spectabilis)

Purple lovegrass ¤ The common name and Latin name are relatable. Eragrostis is derived from “Eros”, Eragrostis spectabilis the Greek word for love, and “Agrostis”, Family: Poaceae Genus: Eragrostis Species: spectabilis the Greek word for grass. Average Height: 24 inches Bloom Time: July and August Elevation Range: All elevations of the Piedmont, less common at high elevations. Geologic/Soil Associations: Generalist. Does well in nutrient-poor, sandy, rocky, or gravelly soil. Soil Drainage Regime: Xeric, dry-mesic, and mesic, well drained. Aspect: Full sun. East, South, & West. Rarely on fully exposed north facing xeric slopes. Habitat Associations: River shores and bars, riverside prairies, prairies in powerline right-of-ways, dry woodlands and barrens, clearings, fields, roadsides, hot and dry landscape restorations in urban spaces and natural area preserves, and other open, disturbed habitats. Common in the Piedmont. ¤ 6 or more florets per spikelet (best observed with hand lens) Flora Associations: This tough little bunch-grass grows in the harshest of roadside conditions, even where winter road salt is applied. It can also thrive alongside black walnut trees where many plants cannot. It is joined in these rough environs by its fellow stalwarts; little bluestem (Schizachyrium scoparium), Virginia wild strawberry (Fragaria virginiana), St. John’s-wort (Hypericum spp.), winged sumac (Rhus copallinum) and common yarrow (Achillea borealis). In less toxic spaces, such as powerline right-of -ways, purple lovegrass associates closely with many more species, including butterfly-weed (Asclepias tuberosa), and pasture thistle (Cirsium pumilum). Purple lovegrass is dependent on the nutrient-poor, dry conditions it favors. On moist fertile ground taller species would soon shade it out. Fauna Associations: In late Summer you might see the Zabulon skipper Poanes zabulon ( ) flitting above a reddish purple cloud of purple lovegrass x 1 flowers, looking for a suitable place to lay her eggs. Zabulon skippers are one ¤ Wider leaf blades than other regional Eragrostis spp. (3-8 mm across) ¤ Wider of our many grass skippers species, all of which are hosted by native grasses. Besides purple lovegrass, Zabulon caterpillars can be reared on purple-top x5 tridens (Tridens flavus), wildrye (Elymus spp.), bentgrass (Agrostis spp.), and native blue- grass (Poa spp.) Adults seek out nectar from nearby blackberry, milkweed, Joe Pye Zabulon caterpillar zabulon) (Poanes weed, and thistles. The leafhopper, Flexamia areolata, is a specialist feeder on purple lovegrass, sucking sweet juices from its coarse leaf blades. To find one you will have to have sharp eyes. They are tiny and camouflaged by two dark leafhopper (Flexamia areolata) spots on their wings that closely resemble black lovegrass seeds. Notes: E. hypnoides, E. hirsuta, x 1 E. capillaris, and E. curvula also commonly occur in areas with purple lovegrass. Zabulon skipper (Poanes zabulon) E. curvula is non-native, and unfortunately it is planted by utility and highway construction crews as a “natural” planting. ¤ It is often recognized in the distance as a bold purple haze in open grassland settings. DeKay’s brownsnake (Storeria dekayi) x 1 Center for Urban Habitats © Gray and Floyd 2019, “Eragrostis spectabilis” flyer sponsored by David Wimberley.

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