Call 503-72ARBOR
Spring
Summer
Fall
Winter
spring image spring
Tree Care Industry Association

Collier Arbor Care is the first company on the West Coast to be accredited by the Tree Care Industry Association.

April

  • Reseed bare areas in lawn, over-seed thin areas.
  • Treat for leaf blight diseases on dogwood, sycamore, and flowering trees.*
  • Prepare garden soil for spring planting if it is dry enough.
  • Plant vegetables; cucumbers, carrots, onions, radishes.
  • Treat diseases on fruit trees like apple scab, brown rot and blossom blight on cherry trees.*
  • Check trees for leaf feeding caterpillars and treat if needed.*
  • Control slugs by baiting or beer traps.

May

  • Fertilize lawns. Also apply weed control if necessary.*
  • Fertilize rhododendrons and azaleas.*
  • Control moles by trapping.
  • Inspect and treat plants for aphids, use insecticidal soap, for leaf-feeding insects use B.T. or pyrethrins.*
  • Plant warm season vegetables; corn, tomatoes, peppers, potatoes, pumpkin, squash.
  • Place pheromone traps in apple and pear trees to detect codling moth. Plan a control program of sprays, traps or predators.*
  • Inspect and treat rhododendruns and azaleas for lace bugs that cause yellow stippled leaves.*

June

  • Treat for adult root weevils in rhododendrons, azaleas, primroses, viburnums, and other ornamentals.*
  • Use composted mulch to conserve moisture and prevent weeds around plants.
  • Lawn mowing: set blade height for 1.5 to 2.5 inches for most lawns. ìGrass cycleî by returning grass clippings back to the lawn with a mulching mower.
  • Prune spring flowering shrubs like azaleas, rhododendrons, forsythia, and lilacs after blooming.*
  • Shear hedges like arborvitae, boxwood, and laurel after spring flush of growth.*
  • Trees infected by spring diseases will begin dropping foliage. Prune out infected branches. Rake up and destroy fallen infected leaves. Fertilize to encourage new growth.*

*Services provided by Collier Arbor Care