Euphorbia trigona (I think) branches falling over -- help?
Hi all! I'm a *very* newbie gardener and don't know much about this plant. I rent from a very nice lady and I'd hate to let her plant die if I can avoid it!
First, one of its long stalks fell over; then two others followed suit. They don't appear to be broken at the base. My question: should I try to prop them back up (maybe tie the whole thing to some structural support), or is the falling over evidence of disease that should be removed? I do notice that several of the stalks have large brown patches up the middle, but don't know if that's common for this plant. I wonder if the whole thing is getting enough light, since it's planted beneath a large tree?
If the fallen parts do need to be removed, is that a job for a professional? I know it has a milky sap that is a nasty allergen.
Many thanks in advance for any advice you can give!