June Gardening Tips

  • If you didn’t do so in May, begin planting very tender plants such as cantaloupe, eggplant, lima bean, pepper, pumpkin, tomato, watermelon and winter squash.
  • Start spraying fruit trees. Check USU Pest Advisory for details here.
  • Treat trees and shrubs for borers.
  • Thin apple, peach and apricot trees.
  • Fertilize annual flowers and vegetables.
  • Make sure soil is getting watered deeply by checking down 4-6” with a garden trowel.
  • Start building compost for your yard.
  • Apply the second application of pre-emergent to lawns to control pesky summer annual weeds such as crabgrass and spurge.
  • Mow the lawn 2 ½ to 3 inches high, and water with about 1 ½ inches of water per week.
  • Begin spraying cherries to control worms once the cherries turn from green to a pinkish color, and continue spraying according to pesticide directions.
  • Watch for fire-blight in pear and apple trees and remove any infections before they begin to spread.
  • Prune spring-blooming shrubs such as lilacs, and forsythia after they bloom.
  • Deadhead all faded perennial blossoms.
  • Plant green beans after June 15 to avoid problems with Mexican bean beetles.
  • Plant peppers in the vegetable garden once the weather has heated up.
  • Give corn an extra shot of nitrogen when or if the lower leaves turn slightly yellow.
  • Fertilize and apply a systemic to roses.
  • Apply a registered fungicide to Jonathan-type apple trees and others that are susceptible to powdery mildew.