Emperor Francis Sweet Cherry
Pollination & Compatibility Guide
Emperor Francis cherry pollination: S-genotype (S3S4, Group III), compatible partners (Van, Rainier, Lapins), bloom overlap, and orchard management.
Emperor Francis is Self-Incompatible (Needs 1 Partner)
Emperor Francis needs at least one compatible pollinizer from bloom group 2–4 to set a reliable crop.
- S-Genotype / Genetics
- S3S4 (Group III)
- Required Companions
- 1 Compatible Partner
- Bloom Group
- Group 3 (Mid-Spring)
- Harvest Timing
- Mid 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 2 to 4 provides matching blossom overlap.
Compatible Pollination Partners (17)
| Cultivar | Bloom Group | Overlap Type | Harvest | Primary Uses | Interactive Test |
|---|---|---|---|---|---|
| Group 3 | Adjacent Overlap | Mid | Fresh Eating | Test Cross | |
| Group 3 | Adjacent Overlap | Mid | Fresh Eating, Dessert | Test Cross | |
| Group 3 | Adjacent 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, Canning | Test Cross | |
Attika | Group 4 | Adjacent Overlap | Late | Fresh Eating | Test Cross |
| Group 2 | Adjacent Overlap | Early | Fresh Eating | Test Cross | |
| Group 2 | Full Overlap | Early | Fresh Eating | Test Cross | |
| Group 2 | Adjacent Overlap | Early | Fresh Eating | Test Cross | |
| Group 2 | Full Overlap | Early-Mid | Fresh Eating | Test Cross | |
| Group 4 | Adjacent Overlap | Mid | Fresh Eating | Test Cross | |
LapinsGuideUniversal Donor | Group 4 | Full Overlap | Late | Fresh Eating, Canning | Test Cross |
SkeenaGuideUniversal Donor | Group 4 | Full Overlap | Late | Fresh Eating | Test Cross |
Incompatible Varieties & Exclusions (6)
These cherry varieties overlap in flowering time with Emperor Francis but cannot fertilise it due to shared S-allele genetic incompatibility groups.
Bing shares both S-alleles with Emperor Francis — they are mutually sterile, whatever their bloom overlap suggests.
Kristin shares both S-alleles with Emperor Francis — they are mutually sterile, whatever their bloom overlap suggests.
Ulster shares both S-alleles with Emperor Francis — they are mutually sterile, whatever their bloom overlap suggests.
Utah Giant'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.
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.
Emperor Francis Pomological Profile & Pollination
Emperor Francis is an esteemed yellow-blushed heritage sweet cherry that has long served as a proven foundation of commercial processing, maraschino canning, and local fresh dessert production across eastern North America. Originating in the United Kingdom, it combines sweet, firm, cream-coloured flesh with outstanding winter bud hardiness and proven field tolerance to rain-induced skin cracking.
Genetically classified in Incompatibility Group III (S3S4), Emperor Francis is gametophytically self-sterile and cross-incompatible with other Group III cultivars such as Bing, Kristin, Ulster, and Lambert. However, it cross-pollinates readily with Group II (Van, S1S3), Group IX (Rainier, S1S4), Group XIII (Schmidt, S2S4), and universal self-fertile S4′ cultivars like Lapins.
Emperor Francis blossoms reliably in mid-spring (Bloom Group 3). Planting it alongside Rainier or self-fertile donors like Lapins, Skeena, and Sweetheart provides an exceptional multi-cultivar orchard layout, securing heavy annual fruit set and opening diverse commercial market opportunities across fresh farm-stand, culinary, and processing channels.
Key Orchard Considerations for Emperor Francis
Emperor Francis demonstrates significantly greater resistance to rain cracking than dark sweet cherries, making it a reliable cultivar in humid growing regions subject to summer precipitation.
Harvest early when golden-yellow with a faint blush for commercial brining and processing, or allow full red blush development on the tree for fresh farm-market sales.
Trees show higher tolerance to bacterial canker and winter trunk injury than Bing, establishing durable, long-lived orchard plantings on standard Gisela or Mazzard rootstocks.
Take Emperor Francis 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 Emperor Francis 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.