How to Grow Carmine Jewel Cherry
Carmine Jewel Cherry
Prunus x (hybrid cherry)
fruitCarmine Jewel is a cold-hardy hybrid cherry tree developed by the University of Saskatchewan, prized for its deep red, sweet-tart fruit and ornamental spring blossoms. It's a semi-dwarf tree that reaches 8-10 feet tall, making it ideal for smaller gardens and northern climates. The tree produces heavy crops of dark red, almost black cherries that are excellent fresh and for processing.
When should you plant Carmine Jewel Cherry in your zone?
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Example Carmine Jewel Cherry timeline · Pittsburgh, PA (Zone 6b)
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Plant Carmine Jewel Cherry
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Carmine Jewel Cherry
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Carmine Jewel Cherry dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-6, exceptionally cold-hardy for northern gardens
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Establishment (Year 1)
12 monthsYoung tree focuses on root development and establishing a strong framework; limited flowering may occur but should be removed
Water regularly, stake for support in windy locations, remove any flowers to redirect energy to growth, apply 2-3 inch mulch layer
Young Tree Development (Years 2-3)
24 monthsTree grows taller and wider with increasing branch structure; light flowering and fruiting begins
Prune to establish main scaffold branches, thin emerging fruit to 4-6 inches apart to encourage larger cherries, continue consistent watering and mulching
Flowering
2-3 weeksDelicate white or pale pink blossoms appear in spring before leaves emerge, typically mid-May in northern zones
Protect from late frosts if possible (frost will kill flowers); ensure adequate pollination—self-fertile but sets better fruit with cross-pollination from another cherry variety
Fruit Development & Maturation
6-8 weeksCherries swell from small green drupes to dark red/nearly black at maturity, reaching harvest size in 6-8 weeks after flowering
Thin fruit to 4-6 inches apart for optimal size and sweetness, maintain consistent watering (critical during this stage), watch for bird predation, spray for pests as needed
Harvest & Dormancy
4-6 weeks harvest; 4-5 months dormancyRipe cherries reach deep crimson-to-black color and harvest in late June to early August depending on zone; tree enters dormancy in fall
Harvest when fully ripe by gently twisting or cutting stems; prune in late winter when dormant to remove crossing branches and maintain shape; avoid heavy pruning which reduces next year's crop
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Yellow sticky traps, spinosad-based insecticides, bagging fruit clusters with fine mesh, sanitation of fallen fruit
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Hand-pick egg masses in late winter, prune out small tents and destroy, Bacillus thuringiensis (Bt) spray, spinosad
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Strong water spray, insecticidal soap, neem oil, encourage beneficial insects like ladybugs
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Water spray to dislodge, spinosad, organic pyrethrin, sulfur dust
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Remove blighted twigs and mummified fruit, improve air circulation with pruning, fungicide applications during bloom if needed
Uses
Fresh eating and desserts
CulinaryCarmine Jewel cherries are sweet with a slight tart note, ideal for eating fresh or using in pies, cobblers, jams, and preserves. Their firm flesh holds up well in baking. [source]
Juice, wine, and preserves
CulinaryThe juice is deep red and flavorful, making excellent cherry juice, wine, and liqueurs. Historically used for cherry wine production in northern climates. [source]
Anti-inflammatory and antioxidant benefits
MedicinalCherry fruit is rich in anthocyanins and polyphenols associated with reducing inflammation and supporting joint health. Studies suggest cherry consumption may reduce uric acid levels. [source]
Spring flowers and year-round structure
OrnamentalThe delicate spring blossoms are ornamental and attract pollinators. The semi-dwarf habit makes it a practical landscape specimen for smaller properties. [source]
Wildlife food source
WildlifeRipe cherries are eagerly consumed by birds and beneficial wildlife. Netting may be needed to protect your harvest, but the tree supports pollinators and ecosystem health. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Carmine Jewel cherries ripen in late June through early August depending on your zone. Pick when fully dark red to nearly black—they do not continue ripening after harvest. Gently twist and lift, or use pruning shears to avoid damaging the spur. For best flavor, harvest on a warm day. The fruit stores 1-2 weeks refrigerated. Most productive harvests occur from year 4 onward.
Fun Facts
- 🌱 Carmine Jewel was developed at the University of Saskatchewan in Canada specifically to survive prairie winters with temperatures dropping to -40°F, making it one of the hardiest sweet cherry cultivars available.
- 🌱 The tree is largely self-fertile (self-compatible) but produces significantly heavier crops when cross-pollinated with another cherry variety, particularly other Saskatoon-developed hybrids like 'Northstar' or standard sweet cherries.
- 🌱 The deep crimson-to-black color comes from high anthocyanin content—the same compounds responsible for the health benefits of blueberries and red wine—making Carmine Jewel among the most antioxidant-rich cherry varieties.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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