A very beautiful heirloom apple that stores well.
AC™ Harostar Apricot on Krymsk 1 (Spring 2025)
A midseason apricot with excellent disease resistance. Also known as HW 436, Harostar.
The tree is upright, productive, and healthy, producing an apricot that ripens 10 days after Harcot. Exceptionally bright and attractive, AC™ Harostar is a large apricot that ripens uniformly with a pretty red blush on an orange background. The flesh is firm and freestone. The fruit is also resistant to bacterial spot, brown rot and skin cracking. This tree is self-fertile, but production will be improved by a pollenizer. This apricot receives high scores in taste trials, but its rating as a canned fruit is low.
As Bob Purvis explains in Pomona, Fall 2006: "The earliest apricots brought to North America were mostly from Spain and similar Mediterranean climates, and they did not include the genes for a broader range of climatic adaptability. Modern breeders have sought out germplasm in many places, including central Asia where the apricot is thought to have originated." One such breeding program is based in Harrow, Ontario, and it has produced the "Harrow Series" of cold-hardy apricots that are suitable for New York and New England. AC™ Harostar was released by this program in 2000, in the same year as AC™ Haroblush and AC™ Harojoy. Unfortunately its parentage is unknown, as this data was lost during the breeding trials.
The Fruit
Fruit Type
Category: Apricot
Subcategory:
Fruit Uses & Storage
Uses: fresh eating, jam, baking, freezing
Storage duration: less than one month (approximate, depending on storage conditions)
Fruit Appearance
Skin color: orange
Flesh color: orange
Fruit Origins
Parentage: unknown
Origin: AAFC-Harrow, Ontario
Introduced in: 2000
Introduced by: Dr. Richard Layne
The Environment
Calendar & Geography
USDA zones: 5 - 8
Chill hours: Not yet determined
Ripening date: Jul 30 (approximate, in New York State) + 10 days after Harcot
Tree Height & Spacing
glossary
Rootstock: Krymsk 1 Rootstock
Rootstock size class: Semi-Dwarf (40% of Standard)
Tree spacing: See details
Good for wildlife planting? N
Diseases & Pests
glossary
Bacterial Spot: Resistant
Brown Rot, Blossom Blight, Fruit Rot: Resistant
Perennial Canker: Resistant
Pollination
Pollination Factors
glossary
Bloom group:
Is it self-fertile? Y
Is it fertile?
Ploidy: Diploid
Rootstock size class:
Semi-Dwarf (40% of Standard)
Pollination Partners
Apricots are not part of our search tool given various complexities. Please see our Pollenizer Search to run other queries and read how the application uses various factors. Also read more about fruit tree pollination.
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