Things to Do This Month
Ornamental Annuals and Perennials
· Allow bulb foliage to remain until it browns and dies back naturally. Then, move or divide as needed.
· Plant gladiolus at 2-week intervals for extended periods of blooming.
· Plant caladiums, dahlias, cannas, elephant ears and other summer blooming bulbs as ground warms.
· Plant warm-season annuals and begin fertilizing.
· Pinch mums to promote bushier plants.
· Fertilize warm-season grasses like zoysia now.
· Control broadleaf weeds with a post-emergent herbicide.
· Maintain proper mowing height for turf species. 1.5-2” for bluegrass, 2-3.5” for tall fescue, and 1.5” for zoysia.
· Monitor turf for sod webworms emerging now.
Trees and Shrubs
· Prune spring-flowering shrubs as soon as possible after flowering.
· Pinch azalea and rhododendron flowers and fertilize after they’ve finished blooming.
· Spray trees subject to borer damage. Repeat two more times at 3-week intervals.
· Check pines for sawfly activity on new shoots.
· Fruit and ornamental trees such as apple, crabapple and hawthorn should be sprayed preventatively to control rust disease.
Fruits and Vegetables
· Prune suckers and watersprouts from fruit and ornamental trees.
· Succession plant warm-season crops after harvesting cool-season crops.
· Monitor for slugs by placing a board over damp soil in the garden. Check under the board each morning and destroy slugs found.
· Thin root crops like carrots and beets to promote larger produce.
· Monitor for striped and spotted cucumber beetles, vectors of wilt and mosaic diseases in squash and cucumber plants.
from Gateway Gardener