Switch grass
Panicum virgatum
Also called Panic grass and Prairie switchgrass
Garden plant · GrassesThe flower head is a cloud of tiny beads on hair-fine branches, and it holds all winter — leave it standing until March and cut it down just before the new growth shows.
Care at a glance
- Ease
- Easy
- Water
- Every 10 daysWater the ground — water at the base, in the morning, not over the leaves.
- Light
- Full sun
- Feed
- Not needed
- Humidity
- Low
- Hardiness
- Hardy — a cold winter RHS H5, to -15°C
- Size
- 0.75 m tall · 0.75 m across
- Lifecycle
- Perennial
- Origin
- The North American prairies
Is it safe for pets and people?
PetsNothing recorded against it
No animal-poison authority lists this plant either way.
PeopleNot checked yet
Nobody has checked this one against a source for us yet, so treat it as unknown rather than safe.
Checked against ASPCA and RHS on 2026-09-11. Where a source says nothing, we say nothing.
A guide, not veterinary or medical advice. If a pet or a person has eaten a plant and you are worried, call your vet or doctor now — don’t wait for signs to appear. Spotted a mistake? Tell us.