Japanese
Elephant Heart Plum is a stunning heirloom cultivar bred by Luther Burbank in Sonoma County during the early 1920s, celebrated for its enormous heart-shaped fruit and rich, juicy flavor. The plums develop a distinctive frosted dark reddish-purple skin that darkens as they ripen, revealing blood-red freestone flesh inside. Hardy in zones 3 to 9 (though some sources extend to zone 10), this tree reaches 12 to 16 feet tall and begins producing in about 3 years. It's a low-chill variety that handles heat exceptionally well, making it far more adaptable than many traditional plums. Home gardeners prize it as a boutique fruit for fresh eating, cooking, and even espalier training.
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3-9
192in H x ?in W
Perennial
High
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The Elephant Heart's massive, heart-shaped fruit is instantly recognizable and dramatically beautiful on the tree. Inside, the blood-red flesh is bursting with sweet juice balanced by subtle tartness and a gentle berry-like undertone, making it equally compelling eaten fresh off the branch or frozen for later use. The tree's willingness to thrive in warmer climates without excessive winter chilling sets it apart from fussier plum varieties, while its compact mature size makes it feasible even in smaller home orchards. It yields particularly well when pollinated by a Santa Rosa plum tree nearby.
Elephant Heart plums excel fresh off the tree, where their juicy sweetness and distinctive flavor shine brightest. The fruit also freezes exceptionally well, making it a favorite for preserving and creating sauces or jams. Many home gardeners grow this variety specifically for fresh eating, though its size and flesh structure also recommend it for cooking applications where you want substantial fruit that holds together well.
Plant bare-root Elephant Heart plum trees in late winter to early spring, once the soil is workable but while the tree is still dormant. Space trees 15 to 20 feet apart to allow for the mature spread of 12 to 16 feet in height. Choose a site with full sun exposure and well-draining soil. Dig a hole slightly wider than the root system and set the tree so the graft union (if grafted) sits 1 to 2 inches above ground level. Backfill with native soil, water thoroughly, and apply 2 to 3 inches of mulch around the base, keeping it a few inches away from the trunk.
Harvest Elephant Heart plums in early fall, typically from September through November, once they've fully colored to a deep reddish-purple and yield slightly to gentle finger pressure. The fruit should feel heavy for its size due to the juice content inside. A ripe Elephant Heart plum will have a slight give when squeezed but should not be soft or bruised. Gently twist and lift the plum from the branch, or use a sharp pruning knife to cut the stem if the fruit resists. Plums picked slightly early will continue to soften and develop flavor at room temperature for several days.
Prune Elephant Heart plum during dormancy in late winter to establish a strong framework and maintain an open center for good air circulation. Remove any crossing, damaged, or diseased wood first. The tree responds well to moderate pruning that encourages branching and prevents the tall, leggy growth habit that can occur in warm climates. Keep the central leader pruned to a manageable height, as the tree's natural vigor means it can quickly outgrow intended space. The variety can also be trained as an espalier, making selective pruning even more intentional; remove branches that don't fit the desired form and tie remaining branches to horizontal supports as they develop.
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“Luther Burbank's legacy lives in every Elephant Heart plum. This remarkable cultivar emerged from Burbank's experimental orchards in Sonoma County during the early 1920s, a period when the plant breeder was at the height of his creative powers, developing new stone fruits that pushed the boundaries of flavor and appearance. The distinctly heart-shaped form and the deep red coloring were no accident but rather the result of careful selection and breeding, capturing Burbank's vision of a plum that was as much a visual spectacle as it was delicious. From those California origins, the variety gradually gained recognition among home gardeners and has since become a prized addition to orchards seeking something beyond the commonplace.”