Spike Redtop
Agrostis exarata
Last reviewed: June 2026
Light
full sun
Water
medium
Size
12"–40" H × 6"–24" W
Bloom
Jun, Jul, Aug
Native to
AZ, CA, CO, ID and 13 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Spike redtop is a native perennial bunch grass that forms upright clumps with narrow leaves and delicate, spike-like flower heads. It grows moderately tall and provides good texture in naturalized areas, thriving in full sun with regular watering. The grass blooms through summer months with airy seed heads that add movement to the landscape.
In an HOA neighborhood
Spike Redtop takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Looks too wild and unmanicured for most front yard standards
- Seed heads may appear weedy to traditional landscaping expectations
- Natural bunch grass form lacks the formal appearance HOAs typically prefer
Wildlife value
This native grass supports bees and beetles during its summer blooming period. The seeds also provide food for birds and small wildlife.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Spike Redtop fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.