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Turf:
Mow grass at a height of 3 inches. Do not allow grass to get taller than 4 inches before mowing. Check for soil insects and treat with Diazinon or Oftanol. Treatment of soil insects at this time will result in poor control. Use of Merit, applied in mid July, will be timelier for grub control. If additional fertilization is needed, apply one-quarter pound of Nitrogen per one thousand square feet. If turf was properly fertilized in the fall, no additional fertilization will be necessary.
Irrigated turf should not be watered at night to avoid disease problems. If disease is present, only treat with fungicide if damage is extensive. Most diseases will dissipate as environmental condition changes.

Trees and Shrubs:
Be sure plant materials do not become water stressed. If irrigation is required, apply one inch of water to root zone in one application between the hours of 4 AM and 10 AM to prevent evaporation. One application per week should be adequate. Plants that wilt in the afternoon are not necessarily in need of watering, check plants early in the morning for wilting. Wilting at this time is an indication of water stress.
Remove weeds from shrub beds and around trees; continue by-weekly inspections for insect or other pest problems.
Flowering trees and shrubs that bloom before June 30th should pruned immediately after blooming, so that next year’s flower buds will not be affected.

Perennials:
Allow spring flowering bulbs to continue to grow until the foliage begins to die back.
An application of fertilizer with slow release nitrogen will benefit bulbs at this time.