Garden Pests and Diseases: Yellowing of Leaves, 1 by darkempress2003

darkempress2003 wrote:
I've recently purchased a Parasol Sun Crimson Mandevilla from Lowe's. I love it, it 'was' beautiful. It does not flower any more.
It sits on my patio which gets b/t 3-4 hours of sun in the morning. I water it roughly every other day or when it feels dry about 2 inches into the soil. In the large planter is also a pink dipladenia, and it seems that whatever is plaguing the mandevilla is now affecting the dipladenia.
I recently watered it with the miracle grow all purpose fertilizer.

The leaves discolor and then just drop off. In a week it won't have any leaves left. In any given day b/t 12-15 leaves just drop off per day. I wonder if it has been over fertilized and I should put it into neutral soil?
I'm thinking about seperating them, washing the roots off and putting both into different containers with neutral soil for a while. What do you all think?