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Gardening in Washington State

Growing Cucumbers

Be sure to select a variety that matures within the growing season of your geographic area. Most cucumbers require 50 to 70 days from planting to first harvest.

Purchase seed from catalogs and garden centers. It is not recommended to plant cucumber seed that have been saved from the previous year, as they are unlikely to produce the same variety.

Cucumber_closeup

When sowing seeds outdoors, germination is best when the soil temperature is at least 55 °F. Seeds can be planted in mid- to late-May, 4 to 5 seeds per hill (mounds of soil) at a depth of 1-inch. Space the hills 4 to 5 feet apart.

When the plants develop two to three leaves, thin the plants to three well-spaced plants per hill. Cucumbers grow best when temperatures are between 70 and 95 °F. Cucumbers are frost-tender vegetables, meaning frost will kill the plants.

For more information on this topic, see http://cru.cahe.wsu.edu/CEPublications/FS096E/FS096E.pdf for a free, downloadable PDF.

Submitted by: Sheila L. Gray, May 22, 2015

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2 comments on “Growing Cucumbers”

  1. Mike Wells said on September 7, 2017:

    I had to put galavanized 1/4″ screen under the planting bed for mole protection. would this affect the plants.

  2. S Gray said on September 7, 2017:

    Hello Mike,

    I don’t think that this will affect your plants, the roots should grow through the screening. My mom used to screen out moles when I was a kid and it worked fine.

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