Japanese Plum 'Shiro'

Prunus salicina

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Prunus (PROO-nus) (Info)
Species: salicina (sah-lih-SEE-nuh) (Info)
Cultivar: Shiro

Category:

Edible Fruits and Nuts

Water Requirements:

Unknown - Tell us

Sun Exposure:

Full Sun

Foliage:

Deciduous

Foliage Color:

Unknown - Tell us

Height:

12-15 ft. (3.6-4.7 m)

Spacing:

12-15 ft. (3.6-4.7 m)

Hardiness:

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

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)

Where to Grow:

Grow outdoors year-round in hardiness zone

Danger:

Unknown - Tell us

Bloom Color:

White/Near White

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Winter/Early Spring

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By grafting

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

This plant has been said to grow in the following regions:

Pelham, Alabama

Augusta, Georgia

Shelley, Idaho

Taylorsville, Kentucky

South Ozone Park, New York

Radford, Virginia

Marysville, Washington

Olympia, Washington

Vancouver, Washington

Oconto, Wisconsin

show all

Gardeners' Notes:

4
positives
0
neutrals
0
negatives
RatingContent
Positive

On Sep 9, 2019, idahomeboy from Shelley, ID wrote:

Of the dozen or so plum varieties I grow, Shiro is the first to ripen each year and sets a bumper crop annually in zone 5a East Idaho. I keep the tree pruned small, about 8 tall and I thin about 90% of the fruit while they are small and it still produces more plums than my family can eat.
They are extremely juicy and mildly sweet and good. Though not my favorite plum variety, being the first to ripen they are always a welcome treat.

Positive

On Jul 7, 2012, eukofios from Vancouver, WA (Zone 8b) wrote:

These are absolutely delicious, juicy plums. My tree is 5 years old and this is the 2nd year producing. Late frost can be a problem. I planted it near a Hollywood plum, then read that they don't necessarily cross pollinate, so now I'm adding a Methley plum. I also read that they self pollinate, and that they don't self pollinate. Even so, this year's crop promises to be my best so far. Should not be your only plum tree, but is worth adding to a mixed backyard orchard.

Positive

On Apr 19, 2008, wannadanc from Olympia, WA wrote:

Shiro plums are not self-fertile, or only marginally so. The information on that aspect, as well as a correct cross pollinator, is anything but consistent. None the less, it is so WONDERFUL when you do get some fruit from it!!!!!! Wear a bib or lean forward to eat it - as it will explode with its juiciness!!

Positive

On Jan 23, 2004, Farmerdill from Augusta, GA (Zone 8a) wrote:

This is my absolute favorite among the plums available today. Years ago we had a big yellow freestone plum that was better, but the name has been lost over the years and I never been able to find a cultivar that matched it. Shiro is a yellow clingstone but absolutely delicious. The tree grows rapidly to to the size of a peach tree. It does flower early and quite often the crop succumbs to late frost, but when you do get a crop its worth it. The trees are not long lasting so plan on replacing every 10-12 years.

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