It’s like an old glass milk bottle, because it looks good and it works. These are bush peas, English garden peas. I used to grow only Sugar Snap Peas for the farmers’ markets, and while they sell like hot cakes (wait a minute; who sells hot cakes?) but they don’t freeze worth a damn and you can’t find anything in the store that even approaches homegrown Sugar Snaps — a pile of wimpy fat pods is what you find. So, now I grow English peas, because they freeze perfectly.
The trellis I bought from some mail-order supplier, but now I can make my own. they’re like a child’s gate: Bamboo (cheap) fastened loosely with rivets (also cheap). This one expands to 2′ high by 12′ long. Just perfect.
Almost forgot: a couple of garden stakes holds it vertical.
I’ll use the same thing for a cucumber trellis.