Stanley Prune-Plum Tree

Stanley Prune-Plum is the standard by which European plums are measured — developed in 1926 at the New York State Agricultural Experiment Station at Cornell University in Geneva, and now one of the most widely grown European plums in American home orchards for nearly a century. The large, oval, deep blue-purple fruit with sweet yellow-green flesh ripens in early September with high natural sugar content and firm, freestone texture that makes it genuinely outstanding in three directions: exceptional for fresh eating at peak September ripeness, ideal for baking in plum cakes, tarts, and preserves, and one of the few plum varieties sweet and dry enough to produce genuine prunes at home without added sugar. Self-pollinating. Late bloom timing avoids most spring frost events.

A licensed variety of Cornell University.

A Fresh Plum AND a Prune Plum — High Sugar Content Does Both

The “prune-plum” designation isn’t just a historical label — it reflects a specific quality that most plum varieties don’t have. Stanley’s exceptionally high natural sugar content and low moisture make it one of the few varieties that will dry into genuine, naturally sweet prunes at home. Most plums are too watery and low-sugar to dry well; Stanley concentrates into proper prunes with the rich, complex sweetness that commercial prunes deliver. For home orchardists who want both fresh summer plums and dried prunes from a single tree, Stanley is the only practical choice.

Developed 1926 at Cornell — The European Plum Standard

Cornell University’s 1926 introduction has remained the most widely recommended European plum for nearly 100 years — a longevity that reflects consistent performance that newer introductions haven’t displaced. Beautiful white spring blooms open late in the season, providing natural protection from late frost events that can eliminate early-blooming varieties entirely. The abundant early September crop of large, oval, deep blue-purple fruit is as beautiful at harvest as it is outstanding to eat.

Freestone, Firm, Sweet — Outstanding for Every Kitchen Use

The freestone pit separates cleanly from the sweet yellow-green flesh, making Stanley practical for processing in large quantities. The firm texture holds up through baking without turning to mush, and the high sugar content produces richly flavored jams, preserves, and baked goods without the added sugar that lower-sugar varieties require. Outstanding for fresh eating, jam, baking, and home-dried prunes.

Why Growers Choose Stanley Prune-Plum

• Fresh plum AND home-dried prunes from one tree — high sugar content does both
• The European plum standard — developed 1926 at Cornell, nearly 100 years proven
• Deep blue-purple skin over sweet yellow-green flesh — beautiful and flavorful at September harvest
• Freestone, firm, high-sugar — outstanding for every fresh and kitchen use
• Late-blooming — natural spring frost avoidance for more reliable annual fruit set
• Self-pollinating, bears in 3-6 years — productive with just one tree in Zones 5–7