Thank you for your support of the 2022 Marion County Master Gardener Plant Sale!

We want to express our sincere appreciation to those that supported our plant sale on May 6th & 7th. It was wonderful to see so many customers attend and share our excitement for gardening. Thank you to the volunteers that donated their time (and sweat and tears!) that made the sale such a success. It couldn’t be done without you!


    Get Answers to Your Questions    


Become a Master Gardener    


Our garden is open to the public.    

Upcoming Workshops



Find us on 1490 KBZY each week at 8:40-9:00 on Thursday mornings.

Greetings! Thank you for visiting the Marion County Master Gardener Association website. The MCMGA is a non-profit organization dedicated to helping home gardeners in Marion County learn about the science, art, and joy of gardening by providing a variety of education and outreach programs. You can find Master Gardener volunteers at the Extension Office Plant Clinic, educational workshops, local Farmers’ markets, and other Master Gardener events.

The Master Gardener Plant Clinic is open Monday-Friday from 9am-1pm and volunteers are available to answer your questions. Our office is in the Marion County Extension Office at 1320 Capitol St NE, Suite 100, Salem OR 97301. You can also email questions along with your pictures to:

 This Month’s Tips

  • Prepare and prime your irrigation system for summer
  • Use a soil thermometer to help you know when to plant vegetables. Wait until the soil is consistently above 70 degrees to plant tomatoes, squash, melons, peppers, and eggplant
  • Plant dahlias, gladioli, and tuberous begonias in mid-May
  • Manage weeds while they are small and actively growing with light cultivation or herbicides. Once the weed has gone to bud, herbicides are less effective
  • Monitor aphids on strawberries and ornamentals. If present, control options include washing off with water, hand removal, or using registered insecticides labeled for the problem plant. Read and follow all label directions prior to using insecticides. Promoting natural enemies (predators and parasitoids that eat or kill insects) is a longer-term solution for insect control in gardens.
  • Control slugs with bait or traps and by removing or mowing vegetation near garden plots

Please use the following link for more May Gardening tips:

This time of year, we get a lot of questions from backyard apple growers about codling moth. Timing of insecticides matters because the sprays work best on the eggs and very young larva. This timing changes every year based on the weather. This year is a late year (cold and wet delays the moths from emerging). Right now (5/9) it looks like spraying should start around June 5th in the Salem area. BUT this date may change if the weather pattern changes.

 Non-pesticide options:

  • Use fruit protection bags (Fruit Sox/Footies/paper bags or other physical barriers) over the fruit to block the moth from being able to lay eggs on the fruit. These need to go on before the moth is active (based on the current weather get those barriers on before 5/23). Basically, as soon as the fruit are large enough tie a bag on each fruit to protect it. Time consuming but effective.
  • Surround (Kaolin clay) can act as a barrier/repellent.

 Good reference to share with clients: Managing Diseases and Insects in Home Orchards

More about codling moth from the PNW Insect Management Handbook:

Program Highlights

Let's Garden

Marion County Master Gardeners™ are trained certified volunteers who promote the joy and science of home gardening in our community. We answer questions, teach workshops, provide speakers, maintain a demonstration garden, and connect home gardeners to the information they need. The Master Gardener program is sponsored by OSU Extension.