Same as vgkg. The "tomato cages" that are really too small for tomatoes.

Exactly right about "tomato cages". They ought to call them pepper cages. The large ones are a few bucks each. Warning. The medium size and small size are made with flimsy wire that can break. The large ones are strong. I NEVER use them for tomatoes, but use them routinely for peppers and cukes. But of course you don't need cages for bush-like peppers. In principle, those cages can also be used to support insulation for frost protection. If they made large clear plastic garbage bags, those would work nicely.

P.S. Actually, I think Hefty does make 33 gallon ones. Those might slide over one of these cages very nicely.

I paid for some type of half- round support that are quite heavy- duty, lasting for years & easy to store nested together. Not the budget item, though.

I’ve also just staked them with ~4-5 ft plastic stakes.

DH made tomato cages out of cattle panel. He cut 4 equal size panels and bound them together with zip ties to make a square. They fold (relatively) flat for storage.

They are not enough - they support about 75% of my peppers but there are always overloaded branches on ones in the center that will break if not supported.

My thought is chicken wire with each oening being at least 1" - 3". Install it parallel with the ground about 15" high, possibly another at 24".

They do work I am hoping for something that plants grow up through every year - the only hard part is transplanting my peppers into it in spring, squirming through the maze is a pain.

I wouldn't use chicken wire -- too hard to harvest through, and higher chance to break branches if you're sticking your arms in there to get to the ripe peppers. Cattle panel would be better. That stuff is strong with large enough opening to allow easy harvesting.

Large tomato cages don't offer enough support in the middle? No problem. The cages themselves are plenty strong. Just string some heavy gauge wire across the larger circles near the top. I've done that trick. Works well. You can make the wire support as dense as you'd like it, and can even easily thread more wires when the peppers are mature and needing that extra support. If things start to get tangled, just remove a wire or two. Of course, that means that the cages can't be stored nested inside each other while the wires are attached.

And again, frost protection is easy with large plastic bags. That's not the case with panels.

Dan true! I tend to grow about a dozen peppers in 1 area so I try to make a 4'x12' grid area - but it is a lot of work and makes planting them frustrating. I also put my peppers out early and keep them until late November - often into early Dec. On the north side I have 1/4" plywood painted dark brown and a "frame" from rebar, some 2'x4' and wire to support a thick clear plastic cover - and blankets for really cold nights. Our growing season is so short it really helps. I heat the area with soil cable, seedling mat's and light bulbs - sometime even elec heaters.

The point is 1 large enclosed space is a lot easier to keep peppers in the months I should not have peppers. The Engineer in me might have gone a little overboard with it. Or a lot overboard.

I've also found those wire cone tomato cages to be perfect for pepper plants - eggplants too. I like the idea of stringing something across to support the center branches, but I think I might prefer something softer and a bit wider than wire - like strips of fabric or similar.

Add me to the list for using small 'tomato' cages - for peppers planted in open ground. A few taller, rangier hot peppers might require the larger cages; Fatali, and the serrano peppers I grew last year, were about 3' tall & needed support as the peppers gained weight.

But if I'm visualizing the OP's setup correctly, concrete remesh might be a possible solution. It has 6" squares that can easily be reached through for harvest or weeding, and is high-gauge steel that will last for years - much longer than the flimsy tomato cages. You can cut strips to be bent into a circle of any size, with the exposed 6" prongs pushed into the soil. OR you could just buy/cut the wire to match the bed width, and mount 1-2 pieces horizontally to support the plants as they grow. My local big-box hardware store sells remesh panels in precut 10' lengths.

If you wish to cover the cages to extend the season, I would suggest slitting some rubber hose, to slip over & cover any sharp wire edges on top. That's a good application for a piece of leaky rubber garden hose; but green poly hose will tend to deteriorate & stick to the cover. Fuel line hose works well too, has a lower profile (so even less chance of tearing) & is fairly cheap.

Several years ago, DW bought A LOT of decorative wire garden border on sale, in short lengths. I bent them to 90 degrees in the middle, and linked two pieces together with wire loops. When open, this forms a stackable "W"; I fold that into a square around each pepper plant, sticking the prongs into the ground. These work great for support... but as I found out last year, they should be put on at the time of transplant, or very shortly thereafter. Any support is difficult to install without damage, if peppers have already begun forming.

I like zeedman's idea for using decorative wire fencing. My banana pappers are tall, and need the height of the large tomato cages. But my Habanadas are bushy, and just tend to flop on the ground. There is foldable wire fencing (18-inches high) that I can cut into foldable segments that could wrap around the plants. That would support them very well.

I made tall cylinders of salvaged concrete remesh for my tomatoes, and until they finally rusted away, they were perfect but a bit hard to store neatly when not in use.

It's the same for tomatoes - supports need to be installed early for best results.

We finally bought a roll of FIELD FENCING... unfort its 300 ft. Yearts ago I found it in 100 ft rolls. DH cut me lots of 24 inch tall lengh by like 12 to 18 inches and made cages. They work so well for pepper plants, eggplants and wax bush beans. Some "cages he made 3 ft tall which turned out better for some plants ..

My Tom cages are prob fy foot tall or more. Have had those for many years. Of course the FIELD fencing comes in diff guage wire .. Thats my way of doing supports.

Happy Gardening