I am not sure what I am doing with these things, but restricted myself to NOT ACQUIRING for at least a year keeping a mini rose alive. Okay, on the home front, found a heavy bearer rose, managed to keep it into it's third blooming season for me.
Okay, I have four others that ARE NOT suffering the same symtoms. This one rose is an extremely heavy bearer. I noticed the same symtoms last year but put it down to my inexperience. This one rose had over 22 buds on one stem. About 1/3 to 1/2 of them opened then the whole plant deteriorated and started dropping. Not knowing what to do, I did nothing, but keep watering. Now all the foliage looks Crispy Fried and if you even sneeze in it's direction it looses leaves. The stems are still green and firm. But what to do in the meantime?
I recently replanted all the rest as I had some in Terra Cotta, and smaller pots, and wanted them all in good 'rose' soil and similar pots. Super drainage, bonemeal, perlite, vermiculite, oyester shell, Supersoil, their very own Fungus Gnats (oh, that's another post). But this one I did not repot. It's been in the same pot for 2 1/2 years.
There seems to be no Black Spot issues, no powdery mildew, no excessive aphids, I have LB nymphs, and lots and lots of spiders. The rest of the buds never did open, and like I said, looks like a good sneeze would send it off in the wind. What is it, and how do it prevent it next year?
Two suggestions. Could be root bound after 21/2 years in the same pot while continually growing. If that is the case, it can't take up enough water to sustain growth. That would cause the leaves to "krispy" . Secondly, I've noticed the "krispy" leaf effect on potted roses that had spider mites.