In Northern United States and Canada – From now on garden wastes will become available. Stems and foliage of crops that have been harvested, annual weeds that are hoed off and raked up and later leaves fallen from trees are examples of this material. Unless it harbors pests or diseases that are carried over in the soil, these wastes can be turned into valuable fertilizing and soil conditioning compost by piling it in a suitable bin or heaping in an out-of-the-way corner and allowing it to decay. Greenwood leafy cuttings of a great many shrubs, trees and perennial herbaceous plants, including ground covers, taken in July root readily.
Now that the weather is warmer, raise the cutting height of the blades of the lawn mower so that the grass is cut not less than two inches high. Apply selective weed killers and practice hand weeding to eliminate Crab Grass and other lawn weeds. Lift and divide bearded Iris shortly after they are through blooming. Toward the end of July Siberian Iris may be treated in the same way. Iris of these types normally require this treatment every three or four years.