Spring
Summer
Fall
Winter
summer image summer
Tree Care Industry Association

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

July

  • Early morning is the best time to water gardens and lawns. Water deeply and infrequently.
  • Treat for root weevil adults when new feeding damage (notching) is present on foliage.*
  • Treat for scale insects emerging from eggs as crawlers. Sticky honeydew and black sooty mold are signs of scale infestation. Look for scale on camellias, holly, maple and rhododendron.*
  • Watch for signs of spider mites on arborvitae hedges and spruces. Look for: dusty-looking foliage, loss of green color, and presence of tiny mites. A good preventative is to hose off your plants with water on a weekly basis. Treat with soap or oil when damage is noticed.*

August

  • Make compost of lawn clippings and garden plants that are ready to be recycled.
  • Control yellow jackets and wasps with traps and lures or by treating nests.*
  • Fall webworm webbing appears in ornamentals and shade trees, prune out nests and destroy, or, if necessary, treat.*
  • Monitor garden irrigation closely so crops and ornamentals don't dry out.

September

  • Apply parasitic nematodes to soil beneath rhododendrons and azaleas affected by root weevils.*
  • Plant lawns until October 15 in western Oregon.
  • Treat lawn weeds now; aerate.*
  • Have our certified arborists recommend ways to storm-proof your trees.*

*Services provided by Collier Arbor Care