Rainline Garden

When to plant blueberries in Walla Walla, WA

Plant blueberry bushes in Walla Walla Apr 1 – May 20.

Easy Plant potted or bare-root bushes

Why these dates

Walla Walla's typical last spring frost is March 27. In the Columbia Basin and low eastern valleys, the soil is usually ready for blueberries around April 1.

Columbia Basin and low eastern valleys. Hot, dry summers and quick spring warm-up. Warm crops go in earlier than west of the Cascades, and irrigation matters more than rain.

Difficulty
Easy
Sun
Full sun
Spacing
4 to 5 feet apart
Planting depth
Same depth as in the pot
Frost
Hardy perennial; comes back every year
First harvest
Small crops in year two or three; full crops by year five

Step by step

  1. Pick a sunny spot with soil that drains well, and mix in an inch or two of compost.
  2. Plant blueberry bushes Apr 1 – May 20, 4 to 5 feet apart. Same depth as in the pot.
  3. Mix peat moss or acidic compost into the planting hole, mulch with sawdust or bark, and pinch off flowers the first year.
  4. Harvest: Pick berries a few days after they turn fully blue, when they roll off into your hand.

Varieties that do well here

  • Duke (early)
  • Chandler (huge berries)
  • Bluecrop
  • Top Hat (for containers)

Watch out for

Birds. Cover bushes with netting as berries color, or plant extra.

Need acidic soil (pH 4.5 to 5.5), which much of western Oregon and Washington already has. Plant two varieties for better crops. West of the Cascades, fall planting works well too.

Common questions

When is the last frost in Walla Walla, WA?

Typically March 27. In 9 years out of 10, frost is over by April 22. These are 1991–2020 NOAA climate normals for Walla Walla Regional Airport.

Is it too late to plant blueberries in Walla Walla?

The spring planting window runs through May 20. Potted plants can still go in later if you water them faithfully through their first summer.

How long until I can pick blueberries?

Small crops in year two or three; full crops by year five. Pick berries a few days after they turn fully blue, when they roll off into your hand.

Also plant in Walla Walla around the same time

Planting dates for blueberries in nearby areas

Full planting calendar for Walla Walla · Blueberries in every city