Hibiscus bud stems being cut (?)
We have a large hibiscus plant, rather common in this area, that has had many blooms, and now has many buds; but recently a lot of the buds have been dropping off. There is no sign of insects; the buds are unopened and look very healthy. The puzzling part is that it looks like the stems about an inch below the bud have been cut off cleanly with a knife.
Would anyone know what might be causing this?