Both Washington State and National Arbor Day will be celebrated this month. Washington Arbor Day is Wednesday April 12th ,and National Arbor Day is on Friday, April 28th. These are especially good days to plant a tree or a shrub if your space is limited. We can provide suggestions for both whether your preference is for flowers, fragrance, fall color or berries for the birds.
TENT CATERPILLARS will be hatching out this month. The best control on lower branches that can be easily reached is to simply prune off the tip of the branch to remove the nest. On higher branches and/or low branches that are heavily infested, spray with BT (Thuricide). Bacillus Thuringiensis is a bacteria that when eaten by caterpillars interferes with their digestive system and results in their death. Other insecticides are not recommended because of the harm they do to other insects that are out working to pollinate trees and shrubs. BT only kills caterpillars.
Watch for signs of root weevil damage (tiny bites from the edges of leaves that leave a scalloped appearance) on Rhododendrons, Azaleas, Salal, Evergreen Huckleberry, Berginia and Hostas. We have both chemical and non-chemical methods of control.
Plant seeds for beets, carrots, chard, lettuce and radishes. Set out starts of celery, broccoli, cabbage, Brussels sprouts, cauliflower, collards, kale, peas and onions.
Buy your summer blooming bulbs now for planting later this month. Dahlias, gladiolas, Oriental lilies, anemones and calla lilies are available in our gift shop.
Thin blossoms on peach, pear and apple trees to allow only one fruit per six inches of limb. You’ll have fewer fruit but they will be bigger and should be better tasting. Allowing fewer fruit to develop will help in getting more flowers next year.