Bouteloua dactyloides, Buchloe dactyloides, Plains Grass
North America's only native lawn grass — evolved on the Great Plains and unmatched for low water use in zones 3–8 (excluding humid Southeast and Pacific Northwest). Goes dormant in both summer drought and winter cold, turning a pleasing straw colour both seasons; greens up with heat and moisture. Mow at 5–10 cm or leave unmown as a natural prairie ground cover (maximum height ~15 cm). Fertilize only in early summer, very sparingly (excess nitrogen favours weeds and reduces drought tolerance). Requires full sun — declines rapidly under shade or high humidity. Extremely slow to establish from seed (plant plugs or sod for faster cover); seed may take 21–28 days to germinate. Once established, needs no irrigation in most of its native range. Not suitable for high-traffic or humid, shady gardens — thrives in dry, open, sun-drenched yards in the central US, prairies, and high-altitude climates.
Sow 4–10 weeks after your last spring frost.
Dashed line: typical last spring frost in zone 7 (Apr 5). Zone dates are averages; most of the UK is zone 8–9, central Europe 6–7 and the Baltics and Scandinavia 4–6. In the app, Tomatograph uses your garden's own frost dates.
Seed is slow, taking 21–28 days to germinate, so plugs or turf give faster cover. Plant in late spring in full sun.
Mow at 5–10 cm, or leave it unmown as a low prairie lawn up to about 15 cm.
Once established it needs little or no irrigation in dry climates. It turns straw-coloured in summer drought and winter cold, then greens up again.
Feed only lightly in early summer; extra nitrogen favours weeds. It declines in shade and high humidity.
Light
Full sun
Water
Low water
Temperature
-35–38 °C
Frost tolerance
Frost-hardy — tolerates frost
Ideal soil pH
6–8
Tomatograph checks your local forecast every morning and only speaks up when one of these applies to your garden.
Growing guide written by Tomatograph. Zone frost dates are averages from openplantdb (CC0 1.0).