Oak Summit Nursery
Black Ice Plum Tree
Black Ice Plum Tree
Plant orders start at $30.
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Black Ice is a cold hardy Wisconsin plum with Western Sand Cherry ancestry. It produces large, deep purple fruit with a blue bloom and vibrant red flesh. At Oak Summit Nursery, fruit on young grafts ripened in the second half of August, one to two weeks before local wild plums and earlier than Toka. The fruit is sweet and juicy with a gentle tart edge.
Choose an own root plant in a large plug or a grafted tree in a 4-inch pot. The grafted trees use Cherry Plum (Prunus 'Jeffchum') rootstock.
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![Black Ice Plum at Oak Summit Nursery [oak-release-20260829:IMG_2165.jpg]](http://oaksummitnursery.ca/cdn/shop/files/IMG_2165.jpg?v=1788019237&width=1445)
Growing details
- Hardiness
- Zone 3
- Fruit
- Large, deep purple plums with a blue bloom and vivid red fleshSweet and juicy with a gentle tart edge
- Mature size
- Up to about 10 ft tallNaturally compact
- Roots
- On its own roots as a large plug, or grafted as a 4 in potGrafted trees are on cherry plum rootstock
- Site and soil
- Full sun and soil that drains wellAvoid low spots where frost settles
Ripening
Second half of August
On young grafts at our nursery. One to two weeks before the local wild plums, and earlier than Toka
More about this plant
From Wisconsin
Black Ice is a cold hardy Wisconsin plum with western sand cherry in its ancestry.
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Cold hardinessZone 3 · Canadian maps for this plant
Zone 3 and warmer
The map shows minimum winter hardiness. Soil, moisture and summer warmth also affect how a plant grows.
About these maps
Climate: Natural Resources Canada, 1991–2020. Provincial distribution: VASCAN via retained botanical research. Province outlines: Natural Earth, public domain.
Open Government Licence – CanadaPollination
Black Ice needs a different plum nearby to set fruit. University of Minnesota Extension lists Toka, American plum and Canada plum as pollen sources for it. Black Ice makes little or no pollen itself, so do not count on it to pollinate other plums.
| Plant alongside | Pollination requirement |
|---|---|
| Toka Plum Tree | Listed by University of Minnesota Extension as a pollen source for Black Ice. |
| Canada Plum Wild Seedlings | Listed by University of Minnesota Extension as a pollen source for Black Ice. |
| American Wild Plum | Listed by University of Minnesota Extension as a pollen source for Black Ice. |