Spray infection-prone garden phlox and bee balm to prevent powdery mildew.
Pinch mums for the last time by July 15. Continue fertilizing every two weeks until Sept. 1.
Harvest onions and garlic when their tops turn brown.
Keep cucumbers well-watered. Droughty conditions make for bitter cukes.
Harvest herbs in late morning after the dew dries on the leaves. Flavors are most concentrated just before plants bloom.
Prune and destroy old fruiting canes of raspberries after harvest is complete.