Ring stakes for Rudbeckia
I've got some Rudbeckia plants that are currently a few cm tall. On the RHS website it says that the plants should be supported with ring stakes well before flowering. The plants are supposed to reach 60cm tall, although at the moment they seem to be taking their time to grow.
I'm trying to find out which type of ring stakes would be best as there seem to be different types, so thought I'd check if anyone had any recommendations? I also can't visualise how the ring stakes end up supporting plants. Do I need to do anything other than place them over the growing position? Am I right in thinking that once they start to flower I can remove the ring stakes, or should I wait until they're fully grown?
Thanks for any help,