I need to know what is wrong with my Wisteria vine. It is growing on an aluminum trellis manufactured by Alumacart. The trellis is umbrella shaped and is designed to cause plants to form a canopy like a tree. The vine seems to do fine until it works its way around the trellis, at which point it withers. I water and fertilize regularly, and the soil pH is OK. I am located in South Florida. My other vines are all doing fine. Any suggestions?
Certified GKH Gardening Expert
Have you checked how hot the structure gets? If it is in direct light, especially afternoon light, it could be heating to the point where it is cooking the plant on the trellis.
Another possibility would be that the trellis is not stable and shifts in windy weather. This would cause it to rub against the vines and scrape off the bark of the vine, which would kill it above the scrapes.