Dull Leaves of Red Barberry
I planted a red barberry plant and two Astra Pink balloon flower plants about two months ago in June. The plants are in full sun. I followed the nursery instructions while planting the seedlings in ground. The plants looked healthy for about a month but now in August I find that the plants has a dull look and the foliage is also significantly reduced. I want instructions relating care of the plant: how much and how frequent watering, fertilizing, pruning, wintering, etc. I live in Canada Zone 5.
Outside United States
Difficult to know the problem. My guess is that it is being under or over-watered.