Handy Reusable Grow Through Plant Support Rings. Grid Design Inside of Ring Allows Much Better, Evenly Distributed Plant Support. Legs Fold Flat For Off Season Storage.
These peony supports are a pretty good value for the price. The diameter is large enough to accommodate a fairly good-sized plant, though they could be a little taller. The legs are thick enough to not bend when driven into the ground, so overall they should do the job.
The most affordable peony supports I could find, and they are a great value. They each have 3 legs but you can't tell from the pictures. Nice coating on them, so they shouldn't rust.