Gardening

Using sustainable and research-based techniques, learn how to grow your own vegetables, connect with other gardeners, or use Ask an Expert to seek gardening advice. Watch a video about the OSU Master Gardener program in Newport, Oregon.

Things to do in May

  • Trap moles and gophers as new mounds appear.

  • Plant dahlias, gladioli, and tuberous begonias in mid-May.

  • Prepare and prime irrigation system for summer.

Gardening Tips

Thatch (Photo by Alec Kowalewski.)
May is prime time to dethatch and aerate lawns
Thatch is a layer of decaying roots and stems that build up between grass and the soil.
Compost. (Photo by Tiffany Woods)
Turn manure into compost for your garden
Animal manure is rich in nutrients that make it a great organic fertilizer for your garden.
Raised bed cloche. (Photo by Sam Anigma.)
Six raised beds to try if you have bad soil
Afraid gardening and your soil are not compatible? Raised beds can come to the rescue.
Azalea lace bug (Photo by Robin Rosetta)
Be on the lookout for azalea-damaging pest this spring
Gardeners and nurseries should be on the lookout this spring for a relatively new pest in Oregon that damages azaleas and rhododendrons, according to experts with the Oregon State University Extension Service.
Rose. (Photo by Lynn Ketchum)
Choose disease-resistant roses for your yard
Roses have such fanciful names and alluring colors, so how do you choose which ones to plant?

Gardening Courses

Master Gardener Online

Learn the art and science of growing and caring for plants, and even become a Master Gardener, through this two-option online course.

Become a water-wise gardener

Plant an economical and environmentally friendly and garden with the help of the WaterWise Gardening online course series.

Popular Publications

A new publication from OSU Extension shows a full-circle approach to gardening on school grounds
Use this self-guided learning module to find information on grapevine nutrient needs and how to diagnose problems with disease, insects, drought, sunburn, and herbicides.
Learn how to create a "cloche" that can be used to protect your plants from cold weather.
If you lack space for a garden, consider raising vegetables in containers.
Making a poor garden better often begins with the soil. If your garden soil is poor, consider giving it some help.
Strategies to to keep the bugs out of your garden.
Improve your soil by adding organic matter and creating raised beds.
Basic instructions on how to prune your trees.

Question of the Week

Given the recent news on emissions of heavy metals in Portland, I'm looking for information on which vegetables take up these pollutants from the soil. What else should I be concerned about?

Upcoming Events

May. 06, 2016 9:00am - 4:00pm
More Space, All Favorites, New, Rare & Unusual Plants Featured at Polk County Master Gardener's …
May. 07, 2016 (all day)
Fat Dog Farms will be hosting their annual garden market sale and open house on …
May. 07, 2016 (all day)
The Curry County Master Gardeners will be having their annual plant sale on Saturday, May …
May. 07, 2016 9:00am - 4:00pm
Enjoy this once a year Plant & Garden Expo in Roseburg. You'll find: Plants, Trees, …
May. 07, 2016 9:00am - 2:00pm
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