An attractive, highly disease-resistant apple, ideal for organic growers.
Harrow Diamond Peach on Nemaguard (Spring 2025)
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An outstanding, reliable, disease-resistant early peach.
Harrow Diamond is a tree of moderate vigor with an open-spreading habit and wide crotch angles. It is cold hardy and resistant to bacterial spot, brown rot, and perennial canker, making it an excellent choice for the home gardener. It has some susceptibility to peach-leaf curl. This tree is self-fertile and a pollenizer is not required.
This is the first really good peach to ripen at Geneva, NY. About 18 days before Redhaven, this peach is a yellow-fleshed freestone. The fruit is medium sized, blushed bright red over yellow, sweet, and very juicy. Harrow Diamond was the 16th variety developed at the Ontario breeding program by Dr. R. Layne. It was released in 1984, and by 1999 it had become one of the most widely grown commercial varieties in the area.
The Fruit
Fruit Type
Category: Peach
Subcategory:
Freestone, Cold-Hardy, Disease-Resistant
Fruit Uses & Storage
Uses: fresh eating, jam, baking, canning, freezing
Storage duration: less than one month (approximate, depending on storage conditions)
Fruit Appearance
Skin color: red
Flesh color: yellow
Fruit Origins
Parentage: Redskin x Harbinger
Origin: Harrow, Ontario, Canada
Introduced in: 1984
Introduced by: Dr. R. Layne
The Environment
Calendar & Geography
USDA zones: 4 - 8
Chill hours: 950
Ripening date: Jul 21 (approximate, in New York State) 18 days before Redhaven
Tree Height & Spacing
glossary
Rootstock: Nemaguard Rootstock
Rootstock size class: Standard (100% Size)
Tree spacing: See details
Good for wildlife planting? N
Diseases & Pests
glossary
Bacterial Spot: Very Resistant
Brown Rot, Blossom Blight, Fruit Rot: Very Resistant
Perennial Canker: Resistant
Peach Leaf Curl: Susceptible
Pollination
Pollination Factors
glossary
Bloom group:
Is it self-fertile? Y
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 Harrow Diamond Peach on Nemaguard. 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 Harrow Diamond Peach on Nemaguard
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