Ask-a-Dave's-Gardener: Bleeding Heart (Lamprocapnos spectabilis) Turning Yellow , 2 by redscent

redscent wrote:
I am having trouble keeping my Bleeding Heart's (Lamprocapnos spectabilis) leaves from turning yellow.
It is located in a small garden on the South Eastern side of the garden bed. It is shaded about half the day, especially after 4 pm PST and thereafter, but it receives all the morning sun and most of the afternoon sun. Is it getting too much sun? Do I need to relocate it to the North Eastern side of the garden bed that is shaded from about 2 pm PST?
I think it is receiving adequate water and I don't think it is over-watered. However, could it be that it is not getting enough water or too much water, which is causing the leaves to yellow? It is not wilting, just turning yellow. Should I add coffee grounds to the soil around it? I've heard that this can really help some plants, but is the Bleeding Heart one of the plants that would benefit from coffee grounds?
Another problem was that cats were pooping just to the right of it about 1 foot away. However, when there was excrement I removed it quickly within a few hours of it being left. I have since solved that problem with Lavender plants and there has been no more cat feces in my garden.
Any advice would be helpful as I am a fairly new gardener without any knowledge of my soil pH and the richness or lack of thereof. I do know that my Clematis does really well and the Bleeding Heart is located just to the front of it.