Late September is a good time to feed your trees and large shrubs. Results will show next spring. There are several Tree and Shrub fertilizers on the market. Look for the crystals which can be spread under the drip line and watered in.
Remember to water azaleas thoroughly and regularly. Keep the soil moist, not soggy.
Water plants such as dahlia and mums thoroughly. Plants in flower require adequate moisture to present their best blossoms.
As the weather cools, cut back, but do not stop, watering perennials that have finished blooming. Less water allows the plant to harden off for the rigors of winter.
Now is an ideal time to plant or overseed cool season grasses. September planting gives roots time to mature before having to deal with freezing weather. Fescue seeds take up to 10 days to germinate. Keep the seeds moist, but do not wash away. Call the Master Gardener office for a list of improved varieties that have been tested and proven by OSU.
If you are interested in Wildflowers, now is the time to plant seeds for bloom next spring. (See article elsewhere for additional information on planting and care of wildflowers.)
Fall is a great time to plant woody ornamentals. September is an ideal time to plant or move needled evergreens. Crape Myrtle does not mind being moved when it's still hot. Plant peony crowns 2 inches deep. Peonies will not bloom if planted too deep, or too shallow.
Unless you can turn up at least 10 grubs in one shovel full of soil, you probably don’t have a problem worth treating. However, If you do have a grub problem, now is your last chance for control. Call the MG office for proper chemical control.
Watch for and treat any late infestations of tree webworms.
Apply tree wrap to newly planted trees to prevent sun damage this winter.
Continue to watch for lace bugs on azaleas, pyracantha, cotoneaster and other woody ornamentals. Call Master Gardeners for chemical controls.
Cucumber beetles can ruin dahlias and mums in a hurry. If you spot green beetles with black spots or stripes down the length of the body, call a Master Gardener for help.
| URI:/calendars/caltips_sep.shtml | Date Modified:Monday, 26-Oct-2009 18:14:10 EDT | Wednesday, 10-Mar-2010 21:36:04 GMT |