Looking for suggestions for an existing (2 year old) foundation bed that is having problems with some of the spreader yews and encore azaleas in the bed. Most of the problem is probably related to having only fair drainage. May start moving things around in the fall. Variegated abelia is doing well. Most daylilies are ok. Just planted Catawba crepe myrtle. Some yew and azaleas are fine others have yellowing leaves. 1-2 hrs sun in part of bed, 3 hrs afternoon sun in all of the bed. About 250 sq ft. Have amended clay soil as I planted and have drip irrigation. However receiving advise that this can exacerbate the problems.
Would like to know how others work in these conditions and what they have found that succeeds.