- rhubarb, apply 3 inch layer of well-rotted compost
- Fruit trees with horticultural oils, lime sulfur, and copper. Horticultural oils will control overwintering insects and mites. Lime-sulfur and copper sprays will control some fungal diseases such as peach leaf curl, brown rot, and shothole fungus.
- Peach trees with with lime-sulfur for leaf-curl fungus