Nassella viridula - Green
aka Stipa viridula
Native to the mixed-grass prairie habitat, Green needle
grass is best used at the far edges of the lawn where it
can benefit from the extra water. This bit of extra care
is needed for this plant to look its best. A good way to
see the full potential is to first grow it in ample sized
Does best with high humidity.
Used for wildlife and naturalized areas. It is also a good transition
plant between the cultivated garden and the landscape beyond.
Description: cool season; clump forming
Foliage is green; of narrow blade width; 30-60 cm (12-24") in height
Flowers in May/June; 40-60 cm (16-36") tall
Ideal conditions: sun to part shade; sandy loam;
drought tolerant once established; needs 17" annual precipitation
Coldest zone: 4 (find your zone; further
info on plant hardiness)
Partner with: Schizachyrium,
Dictamnus albus, Sedum 'Matrona'
Season of interest: spring and fall (dormant in summer)
Drought tolerance rating: 1 (water to root depth once
a month); further info
Native to: prairies of central North America
Recommended plant spacing: 30-60 cm (12-24") why
such a difference?
Pronounciation: Nasella (nas-SEL-uh) viridula (vir-ID-yoo-luh)
More ornamental grasses
Compare Nassella viridula to our other grasses in this handy