Horticulturist, Jerry Goodspeed tackles the top five garden pests.
1. Powdery Mildew: Problem – white fungus on plant leaves
a. Causes plants to lose energy, smaller leaves, less flowers, and scared fruit
b. Solutions: keep water off leaves and fruit; Spray with a sulfur or copper; spray with a fungicide
2. Codling Moth (Wormy Apples): Problem – worms in apples
a. Moth lays eggs on fruit which hatch and bore into apples and pears. Worms in apples when harvesting.
b. Solutions: bag Apples; Start spray program now with registered insecticide or organic sprays
c. Go to http://utahpests.usu.edu/ to find out more on sprays and timing
3. Cankerworms: Problem – eats leaves and defoliates oaks, maples, crabapples, other trees
a. Small green worm that hangs by thread from tree and eats foliage
b. Solutions: Tolerate (trees will recover), spray with a Bt product or other registered insecticide
4. Aphids – Problem – small insect that sucks the juice and energy from plants
a. Aphids reduce the strength and health of plants, cause honeydew (sticky substance on leaves)
b. Solutions: Spray with strong stream of water; apply an insecticidal soap; tolerate; set out lady bugs
5. Slugs and Snails: problem – eat leaves of herbaceous plants (annuals and perennials)
a. Slugs and snails: defoliate and weaken plants, can completely kill plants
b. Solutions: traps (using small containers and beer); Trap under boards; keep area drier; go out at night and kill (nice date night activity…)
Thursday, June 17th
Ogden Botanical Gardens
Here is the schedule:
Noon – 6:00 – Free garden tours
3:00 to 8:00 – Local artist will be in the garden painting and displaying their art.
6:00 to 6:30 – Local chefs in the garden demonstrating their ‘art’. There will be free samples.
6:30 – 7:30 – The Aspen Strings, a 10 piece ensemble, will perform in the garden.
The event is free to the public.
For more information on workshops, plant sales and classes go to: http://ogdenbotanicalgardens.blogspot.com/
Or contact: Jerry L. Goodspeed
Utah State University Extension
Director – Ogden Botanical Gardens