This Hoya Kerrii reverse var. is a beast. Vines are so hard to bend to the trellis. I do it with string and just tighten the string a tiny bit each day until it is where i want it. Sometimes the stem will weep a bit at the bend but then i just wait for it to heal/callous over and I start tightening the string again. I guess you could call it braces for a plant LOL