@anyagoro, here are a couple of pictures: I uploaded them yesterday evening but then spent way too long on the phone and headed straight to bed.
This is just a piece of ordinary plastic mesh tied with steel wire, and a piece of rebar hammered into the ground to keep the whole contraption straight.
It's basically all stuff I had laying about and put to work.
Next year I will build a similar, but much larger, cage with steel mesh for the ancient Fall mums we have in the garden since they are extra-tall and get squashed the moment there's a light rain. Why I did not think of it before...