Growing plum (japanese)
stone fruit
WINTER CHILL NEEDED
~400–800 hrs
POLLINATION
Needs a pollination partner
Pollination
Needs a second Japanese plum (or a compatible hybrid) blooming at the same time. 'Santa Rosa' is a widely used pollinizer.
Growing it
Zones 5-9. Juicier and earlier than European plums; thin heavily or branches break.
Will you get enough chill?
Plum (Japanese) needs roughly 400–800 hours between 32 and 45 °F over winter to break dormancy evenly. Check your area with the chill hours calculator. Low-chill breeding has pushed many varieties well below the figure here, so read the plant tag.
Chill and pollination are given at the fruit-type level; specific cultivars can differ. Values are typical ranges for home-garden planning.
