Klamath Plum, Sierra Plum, Pacific Plum

Prunussubcordata

Family
Rosaceae (ro-ZAY-see-ee)
Genus
Prunus (PROO-nus)
Species
subcordata (sub-kor-DAH-tuh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Height
20-30 ft. (6-9 m)
Spacing
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
Parts of plant are poisonous if ingested
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Other Details
Category
Trees
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Propagation Methods
From woody stem cuttings
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Paradise, California

Klamath Falls, Oregon

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Gardener's Notes:

2
positives
1
neutral
0
negative
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C
Sierra Madre, CA | April 2020 | neutral

Does the Klamath Plum contain iodine?

R
Jacksonville, OR | March 2016 | positive

I found Prunus subcordata growing at 2,300 feet on a north aspect in the eastern Siskiyou mountains. A large clump (15 feet in diameter) ...Read More

O
O
Paradise, CA (Zone 9a) | June 2011 | positive

Grows wild in the foothills of the Sierra Nevada, including my front yard, and great grandparents had a mature tree growing in their yard...Read More

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