Tree Maintenance and Pruning Information

Core Adopter Tree Care Tasks 2020

Free Insect Class at Curran Apple Orchard taught by Bill Horn

Saturday, May 2, 2020

9am – 10 am Insect Class

Learn how to combat coddling moths and other pesky insects at a free workshop taught by Master Gardener Bill Horn at the Curran Apple Orchard Park, located at 3920 Grandview Dr W in University Place.

Mr. Horn will discuss and demonstrate homemade traps from 9am to 10am. Interested people are asked to rsvp at to help determine how many handouts are needed.


Codling Moth Trap Recipes

For Homemade Traps — Mix in one gallon jug

  1. 1 Cup Molasses
    2 Cups Apple Cider Vinegar
    1 tsp yeast
    Water to fill, after 24 hours 1-2 cups per trap
  2. 1 Cup Apple Cider Vinegar
    2 Cup Molasses
    1/8 tsp Ammonia
    5 Cups Water, after 24 hours 1-2 cups per trap
  3. 1 Cut-up Banana Peel
    1 Cup Vinegar
    1 Cup Sugar
    Water to fill, after 24 hours 1-2 cups per trap
  4. 1/3 Cup Molasses
    1/8 tsp Ammonia
    appears that is per trap
  5. 2 Cups Apple Cider Vinegar
    1 tsp yeast
    Water to fill, after 24 hours 1-2 cups per trap
  6. 1/4 Cup Molasses
    2 1/2 Cup Water
    1/4 tsp yeast
    per trap
  7. 1/4 Cup Apple Cider Vinegar
    1/4 Cup Molasses
    1/8 tsp Ammonia
    5 Cups Water
    per trap


FREE Master Gardener Pruning Class at United Church

Thursday, TBD, 2020, from 7 pm to 9pm
Location: United Church 3912 Grandview Drive West, University Place.

Master Gardener/professional arborist Robert Sweet will explain proper pruning techniques and tools at this FREE evening class. Novice and experienced pruners can also get hands on experience and guidance from Master Gardeners during Saturday pruning parties. For more information on pruning techniques, please visit the Master Gardeners Link as well as our Pruning Brochure.


Master Gardeners teach pruning classes each spring. Learn how to prune apple trees and help maintain the orchard. Trained volunteers are also available to assist people at the pruning parties which will be held at 10 a.m. to 1 p.m. on the following Saturdays in 2020:

      • February 1 & 15  
      • March 7 & 21
      • April 4 & 18

People are welcome to prune at their convenience AFTER receiving appropriate instructions. Recommended pruning tools include work gloves, hand pruners, loppers and hand saws. Some tools available on site. Please carry all trimmings to the dumpsters.

Insect Class

Insect/Sticky Apple Traps
Saturday, May 2, 2020
9am – 10 am

Learn how to deal with the dreaded apple maggot and other pesky insects at a FREE class taught by Master Gardener and Western Cascade Fruit Society member Bill Horn. The class is scheduled from 9am – 10am in the orchard barn, located at 3920 Grandview Drive West in University Place.

Please pre-register at

For more information, please email:


Apple trees should be thinned when the fruit is approximately the size of a nickel. The fruit should NOT touch each other… remove all but one fruit per cluster. Gently twist off the excess fruit and dispose of in the dumpsters to avoid future insect problems.

Thinning is extremely important because it:

* Encourages larger, higher quality apples
* Prevents branches from snapping or breaking due to heavy fruit load
* Exposes developing fruit to sun so they can ripen fully and obtain good color
* Helps offset tendency for trees to “take a year off” after producing heavy fruit loadblue apple


Pick Windfalls

Pruning Adopters must pick up all windfalls and place the apples in the dumpster to prevent apple maggot larva from surviving in the soil and infecting future apple crops.