chill hours for SE Portland?

Asked November 16, 2014, 12:40 AM EST

Hi, I recently moved to inner SE Portland and would like to plant from fruit trees. I would like to know how I can find out how many chill hours I can expect for my location so I can choose my trees. Thanks!

Multnomah County Oregon hardiness zone horticulture

1 Response

Welcome to Oregon!

The traditional fruits such as apples and pears can thrive with annual dormant sprays for both insects and disease. Cherries are very susceptible to disease, plums slightly less so. “Growing Tree Fruits and Nuts in the Home Orchard” provides a thorough overview for our region. http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/13718/EC%20819.pdf

You might also be interested in blueberries, fruiting shrubs which thrive throughout our region. See “Growing Blueberries in Your Home Garden” http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/12202/ec1304.pdf?sequence=1

Tropical fruits are perhaps the only ones which are challenging in our region. Even so, the relatively cold-tolerant Meyer lemon can be successful in a sizable container with one of two methods. The first, grown outdoors during the warm season, then in a greenhouse for the winter. The second, container-grown outdoors year-round except whenever temperatures go below 32F, at which time it should be moved to a sheltered site, perhaps a garage.

If you’re considering seasonal vegetables or flowers, please review “Growing Your Own” as it is an overview of general gardening including soil preparation, common pests and more. Page 7 is a chart of planting dates for vegetables. You live in Region 2. http://ir.library.oregonstate.edu/xmlui/handle/1957/21092

And this page links monthly garden calendars so that you know what to do when. http://extension.oregonstate.edu/gardening/gardening-calendar

The Multnomah County Master Gardeners will be a helpful in-person resource for you. Their office is in Montgomery Park, 2701 NW Vaughn St. Suite 450, Portland, OR 97210. Phone 503–445–4608. Email mcmastergardeners@yahoo.com Hours are 10 AM to 2 PM, Monday through Friday, closed holidays.