Pears Cultivars
& Pollination Guide
Authoritative pomological cross-pollination guides, flowering overlap charts, parthenocarpy notes, and rootstock compatibility for pear cultivars.
Pear Pollination Genetics & Parthenocarpy Principles
Pear flowering periods are compressed into numbered bloom groups (1 through 4). Cross-pollination requires overlapping blossom timing between genetically compatible cultivars, with Asian pears flowering 7–14 days ahead of mid-season European varieties.
Cultivars like Conference and Concorde set commercial crops without fertilisation via parthenocarpy. However, companion pollination produces larger, seed-bearing pears with regular shape and higher commercial packout.
Most European pears (e.g. Bartlett, Comice, Bosc) are self-incompatible diploids requiring a compatible partner flowering in the same or adjacent bloom group. Reciprocal exclusions (e.g. Bartlett × Seckel) must be avoided.
Cultivars like Magness, Gourmet, Luscious, and Warren produce non-viable pollen despite being diploid. They accept pollen freely from compatible donors but cannot pollinate companion trees.
Bartlett, Bosc, Seckel, and Asian pears exhibit graft incompatibility with Quince rootstocks (Quince A/C), requiring an interstem (such as Beurré Hardy or Conference) or clonal Pyrus rootstocks (OHxF 87/97).
Curated Pear Cultivar Guides (30)
Explore 30 curated pomological profiles and cross-pollination compatibility guides for pear cultivars.
Conference Pear
Pear CultivarConference pear pollination guide: parthenocarpic cropping habit, diploid compatibility, Quince rootstock affinity, and commercial blossom management.
Concorde Pear
Pear CultivarConcorde pear pollination guide: Conference × Comice genetics, parthenocarpic cropping, diploid bloom overlap, and Quince rootstock compatibility.
Bartlett (Williams' Bon Chrétien) Pear
Pear CultivarBartlett (Williams' Bon Chrétien) pear pollination guide: diploid compatibility, Seckel exclusion rule, Quince graft incompatibility, and orchard care.
Comice (Doyenné du Comice) Pear
Pear CultivarComice pear pollination guide: Bloom Group 4 timing, diploid companion choices, Quince rootstock affinity, and cold storage conditioning.
Bosc (Beurré Bosc) Pear
Pear CultivarBosc pear pollination guide: Bloom Group 3 overlap, diploid compatibility, Quince graft incompatibility, and cinnamon russet storage management.
Anjou (Beurré d'Anjou) Pear
Pear CultivarAnjou pear pollination guide: Bloom Group 4 timing, diploid companion requirements, cold conditioning physiology, and winter storage.
Seckel Pear
Pear CultivarSeckel pear pollination guide: early bloom timing, Bartlett cross-exclusion rule, fire blight resistance, and sugar pear orchard management.
Red Clapp's Favorite Pear
Pear CultivarRed Clapp's Favorite (Starkrimson) pear pollination guide: summer harvest window, diploid bloom overlap, fire blight care, and Quince interstem requirements.
Beth Pear
Pear CultivarBeth pear pollination guide: East Malling breeding, early harvest timing, Quince C affinity, and diploid pollinizer companion pairings.
Blake's Pride Pear
Pear CultivarBlake's Pride pear pollination guide: Bloom Group 4 timing, high fire blight resistance, USDA breeding, and diploid partner selection.
Flemish Beauty Pear
Pear CultivarFlemish Beauty pear pollination guide: partial self-set dynamics, extreme cold hardiness, diploid partner pairing, and scab management.
Golden Spice Pear
Pear CultivarGolden Spice pear pollination guide: Bloom Group 2 early timing, Zone 3 cold hardiness, culinary use, and early diploid companions.
Harrow Delight Pear
Pear CultivarHarrow Delight pear pollination guide: early bloom timing, fire blight resistance, Agriculture Canada breeding, and diploid pollinizers.
Harrow Sweet Pear
Pear CultivarHarrow Sweet pear pollination guide: high precocity, fire blight resistance, Bloom Group 3 overlap, and storage pear management.
Highland Pear
Pear CultivarHighland pear pollination guide: Bartlett × Comice parentage, late dessert storage, Bloom Group 3 timing, and diploid pollinizers.
Kieffer Pear
Pear CultivarKieffer pear pollination guide: European × Asian hybrid vigour, Bloom Group 4 timing, fire blight resistance, and culinary processing.
Maxine (Starking Delicious) Pear
Pear CultivarMaxine pear pollination guide: Bloom Group 3 overlap, high fire blight resistance, diploid companion pairing, and fresh market qualities.
Moonglow Pear
Pear CultivarMoonglow pear pollination guide: Bloom Group 2 timing, universal pollinizer utility, USDA blight-resistant breeding, and early harvest.
Patten Pear
Pear CultivarPatten pear pollination guide: Bloom Group 2 timing, Zone 4 cold hardiness, diploid companion choices, and northern orchard layout.
Potomac Pear
Pear CultivarPotomac pear pollination guide: Moonglow × Anjou pedigree, Bloom Group 4 timing, fire blight immunity, and winter storage.
Rescue Pear
Pear CultivarRescue pear pollination guide: Pacific Northwest heritage, large fruit sizing, partial self-set, and maritime scab resistance.
Shenandoah Pear
Pear CultivarShenandoah pear pollination guide: Max-Red Bartlett cross, Bloom Group 3 overlap, long storage life, and USDA blight resistance.
Taylor's Gold Pear
Pear CultivarTaylor's Gold pear pollination guide: Comice russet mutation, Bloom Group 3 overlap, Quince rootstock affinity, and handling durability.
Magness Pear
Pear CultivarMagness pear pollination guide: male-sterile diploid genetics, pollinizer partner requirements, fire blight resistance, and orchard planning.
Gourmet Pear
Pear CultivarGourmet pear pollination guide: male-sterile diploid traits, cold hardiness, companion pollinizer rules, and northern orchard culture.
Luscious Pear
Pear CultivarLuscious pear pollination guide: male-sterile diploid genetics, early bloom partner requirements, extreme hardiness, and orchard layout.
Warren Pear
Pear CultivarWarren pear pollination guide: male-sterile diploid classification, pollinizer partner rules, high fire blight resistance, and orchard care.
Nijisseiki (20th Century) Asian Pear
Pear CultivarNijisseiki (20th Century) Asian pear pollination guide: Bloom Group 1 overlap, early diploid partners, Pyrus betulaefolia rootstock affinity, and thinning.
Shinko Asian Pear
Pear CultivarShinko Asian pear pollination guide: Bloom Group 1 timing, fire blight resistance, companion pollinizers, and commercial crop thinning.
Olympic (Korean Giant) Asian Pear
Pear CultivarOlympic (Korean Giant) Asian pear pollination guide: Bloom Group 1 phenology, large fruit sizing, cold hardiness, and long storage.
Check a Pear Cultivar
Looking for Conference, Bartlett, Doyenné du Comice, or Asian pears? Test cross-compatibility and flowering overlap in our interactive checker.
Model Your Pear Block in Our Free Tools
Check supported pollination pairings for this crop, or plan block spacing and a nursery tree order for crops covered by the layout tool.
Fruit Tree Pollination Checker
Select a supported pear cultivar to see compatible partners, flowering overlap, and ruled-out crosses.
Commercial Orchard Layout Planner
Calculate high-density tree spacing, row geometry, equipment clearances at full canopy, and establishment costs.