An attractive, highly disease-resistant apple, ideal for organic growers.
Longjohn Plum on Myrobalan (Spring 2024)
A bigger, better prune-plune developed at Cornell. Also known as Long John.
The tree is vigorous, upright, spreading and somewhat willowy in growth. Precocious and productive, it is partially self-fruitful, but heavier cropping will be obtained with a good pollenizer. Suitable partners include Polly, Stanley, Castleton, and Victory. This tree is sensitive to mites and canker, but resistant to bacterial spot.
Ripening with Stanley, Longjohn is a large, long, teardrop-shaped, attractive blue plum with fruits that are freestone and very high quality in the style of Iroquois, one of its parents. The skin is dark purple-blue covered by waxy bloom, and the flesh is amber, smooth textured, and similar in firmness to Stanley. It is suitable for packing and shipping. In taste tests this has been my favorite.
Longjohn is named after the late Geneva plum breeder, John P. Watson.
Please Confirm
The Fruit
Fruit Type
Category: Plum
Subcategory:
European
Fruit Uses & Storage
Uses: fresh eating, jam, baking, canning, freezing, jelly, sauce
Storage duration: one to three months (approximate, depending on storage conditions)
Fruit Appearance
Skin color: blue
Flesh color: orange
Fruit Origins
Parentage: Iroquois x CA4A33L
Origin: Geneva, New York
Introduced in: 1993
Introduced by: NYSAES; R.L. Anderson, J.P. Watson, and K.G. Livermore
The Environment
Calendar & Geography
USDA zones: 5 - 8
Chill hours: Not yet determined
Ripening date: Sep 01 (approximate, in New York State) + 0 days after Stanley
Tree Height & Spacing
glossary
Rootstock: Myrobalan Rootstock
Rootstock size class: Standard (100% Size)
Tree spacing: See details
Good for wildlife planting? N
Diseases & Pests
glossary
Bacterial Spot: Resistant
Bacterial Canker of Stone Fruit: Susceptible
Pollination
Pollination Factors
glossary
Bloom group:
Is it self-fertile? N
Is it fertile? Y
Ploidy: Diploid
Rootstock size class:
Standard (100% Size)
Pollination Partners
This table shows the first few results from a full search for pollenizers of Longjohn Plum on Myrobalan. Please see our Pollenizer Search to run other queries and read how the application uses various factors. Also read more about fruit tree pollination.
See all pollination matches for Longjohn Plum on Myrobalan
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