DibbleWhen to plant plum trees in Zone 9
In Zone 9, the last spring frost usually passes around March 1 and the first fall frost arrives around December 1, leaving about 275 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Very long season. Plant cool crops in fall and winter; manage summer heat.
Planting windows for plum trees in Zone 9
| Task | Window |
|---|---|
| Transplant | Feb 8 to Feb 22 |
| Estimated harvest | Jun 28 to Jul 28 |
The harvest estimate counts 140 days to maturity, then a picking window of about 30 days. These windows use typical frost dates for Zone 9; Dibble pins them to your exact ZIP code.
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Plum in a Zone 9 season
Zone 9 gives about 275 frost-free days. Plum needs roughly 140 days from transplant. That leaves about 135 days of slack, so there is room for a late start or a second planting.
How to grow plum trees
Plant a bare-root tree in early spring. Some plums need a pollination partner, check your variety. Fruit follows in a few seasons.
Companion plants
Good neighbors for Plum:
Plum in other zones
Not in Zone 9? Pick your zone for the same dated windows.
Keep exploring
Plum: the full growing guide · The Zone 9 planting calendar · Every crop and zone
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.