Chelan Sweet Cherry
Pollination & Compatibility Guide
Chelan cherry pollination guide: S-genotype (S3S9, Group XVI), early bloom overlap, compatible pollinizers (Lapins, Sweetheart), and orchard care.
Chelan is Self-Incompatible (Needs 1 Partner)
Group XVI, shared with Burlat and Tieton. Chelan needs at least one compatible pollinizer from bloom group 1–3 to set a reliable crop.
- S-Genotype / Genetics
- S3S9 (Group XVI)
- Required Companions
- 1 Compatible Partner
- Bloom Group
- Group 2 (Early-Spring)
- Harvest Timing
- Early Season
Flowering Period & Overlap Window
Sweet and sour cherry flowering periods are classified into numbered bloom groups (1 through 5). Cross-pollination requires overlapping bloom timing between genetically compatible cultivars.
Any compatible cherry cultivar flowering within Group 1 to 3 provides matching blossom overlap.
Compatible Pollination Partners (14)
| Cultivar | Bloom Group | Overlap Type | Harvest | Primary Uses | Interactive Test |
|---|---|---|---|---|---|
| Group 2 | Full Overlap | Early | Fresh Eating | Test Cross | |
| Group 2 | Full Overlap | Early | Fresh Eating | Test Cross | |
| Group 2 | Full Overlap | Early-Mid | Fresh Eating | Test Cross | |
| Group 3 | Adjacent Overlap | Mid-Late | Fresh Eating, Canning | Test Cross | |
| Group 3 | Adjacent Overlap | Mid | Canning, Fresh Eating | Test Cross | |
| Group 3 | Adjacent Overlap | Mid | Fresh Eating | Test Cross | |
| Group 3 | Full Overlap | Mid | Fresh Eating | Test Cross | |
| Group 3 | Full Overlap | Mid | Fresh Eating, Dessert | Test Cross | |
| Group 3 | Full Overlap | Mid | Fresh Eating | Test Cross | |
SelahGuideUniversal Donor | Group 3 | Full Overlap | Mid | Fresh Eating | Test Cross |
StellaGuideUniversal Donor | Group 3 | Full Overlap | Mid | Fresh Eating, All-Purpose | Test Cross |
SunburstGuideUniversal Donor | Group 3 | Full Overlap | Mid | Fresh Eating | Test Cross |
| Group 3 | Adjacent Overlap | Mid | Fresh Eating | Test Cross | |
| Group 3 | Adjacent Overlap | Mid | Fresh Eating, Canning | Test Cross |
Incompatible Varieties & Exclusions (2)
These cherry varieties overlap in flowering time with Chelan but cannot fertilise it due to shared S-allele genetic incompatibility groups.
Vibrant's S-genotype is not recorded. For this crop compatibility is computed from S-alleles, so it cannot be offered as a partner without one.
Vindskörsbär (Victor)'s S-genotype is not recorded. For this crop compatibility is computed from S-alleles, so it cannot be offered as a partner without one.
Chelan Sweet Cherry Pollination & Early-Season Culture
Chelan is an essential early-market sweet cherry developed at the Irrigated Agriculture Research and Extension Center in Prosser, Washington (Stella × PC 7144-6). Ripening nearly two full weeks ahead of Bing, Chelan produces medium-to-large, round-heart shaped mahogany fruit with firm crisp flesh, moderate sweetness, and remarkable field resistance to rain-induced cracking in humid spring weather.
Genetically, Chelan is self-incompatible with the S3S9 genotype, placing it in Incompatibility Group XVI. It cannot pollinate itself or fellow Group XVI selections (such as Burlat and Tieton). However, Chelan is fully cross-compatible with Black Tartarian (S1S2), Lapins (S1S4′), Sweetheart (S3S4′), Skeena (S1S4′), and Stella (S3S4′), receiving pollen freely across overlapping flowering periods.
Chelan blooms early in Bloom Group 2. Pairing it with early-blooming diploid cherries and reliable self-fertile universal donors ensures dependable cross-pollination, establishing high commercial crop potential for the opening weeks of the fresh cherry harvest across commercial stone fruit growing districts and northern orchard regions.
Key Orchard Considerations for Chelan
Chelan possesses superior crack resistance compared to Bing and Rainier, providing crucial insurance for early harvests in regions where late spring storms are common.
Because of its early bloom date, Chelan is among the first varieties to expose tender flower buds. Locate blocks on elevated terrain with excellent air drainage.
Fruit darkens well before full sugar accumulation. Allow fruit to reach deep mahogany skin colour with 16°+ Brix to maximize eating quality and consumer satisfaction.
Take Chelan from Planning to Planting
Use Kropigo's free browser tools to model your block density, tree counts, and pollinizer rows, then maintain permanent orchard records row by row.
Pollination Checker
Check Chelan against supported cultivars with compatible flowering and pollination data.
Commercial Block Planner
Calculate high-density tree spacing, row geometry, and establishment costs.
Block Record Keeping
Track pruning, chemical thinning, and harvest tallies block by block from the orchard.