Bumper® Satsuma Mandarin is a highly productive, heavy-yielding mandarin variety named for its tendency to produce "bumper crops" of sweet, seedless fruit. Developed to combine the cold hardiness of traditional Satsumas with reliable commercial-grade output, it is an excellent choice for home orchards and edible landscapes in warm-temperate regions.True to its name, this variety produces massive clusters of medium-sized, bright orange fruit—often bearing so heavily that lower branches require propping or staking to prevent bending or snapping under the weight. The oranges feature loose, pliable "zipper" skin that peels effortlessly in one piece. The internal flesh is tender, exceptionally juicy, and completely seedless. The oranges offer a rich, traditional Satsuma flavor profile with a pleasant balance of sweetness and mild acidity.
| Scientific Name |
Citrus reticulata 'Gremoy8' / Citrus unshiu 'Bumper' |
| Foliage: Evergreen |
Leaves: Oval-to-lanceolate, 3–4 inches long; dark glossy green and leathery with aromatic oils
Flowers: Small, 5-petaled white blossoms borne in spring; intensely fragrant orange-blossom scent.
Fruit: Medium, flattened oblate mandarins; bright orange "zipper skin" that peels effortlessly; juicy, sweet-tangy flavor.
Seeds: Seedless (0 seeds per fruit)
Bark: Smooth gray-green on young growth, maturing to smooth gray-brown on the main trunk
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| Life Span: Perennial |
50+ years |
| Mature Height |
In-Ground: 10–12 ft; Container/Dwarf: 5–7 ft |
| Mature Width (Spread) |
5–8 ft (compact, rounded-to-weeping canopy) |
| Growth Rate |
Moderate (approx. 12–24 inches per year) |
| USDA Zone / Chill Hours |
Zones 8b–11 (Tolerates brief drops down to 20°F to 25°F / -4°C to -7°C); Requires 150–250 chill hours |
PLANT CARE & CHARACTERISTICS
Light Requirements: Full Sun (Requires 6–8+ hours of direct sunlight daily).
Water Requirements: Moderate; deep watering when the top 2–3 inches of soil dry out; keep evenly moist but not waterlogged.
Drought Resistance: Moderate once fully established.
Soil Type: Well-draining sandy loam or rich loamy soil; dislikes soggy clay; pH 6.0–7.0.
Deer Resistance: High (Aromatic citrus foliage is generally avoided).
Pest / Disease Resistance: Resistant to Citrus Canker; susceptible to Scale, Mites, Citrus Leafminer, and Phytophthora Root Rot in poorly drained soil.
Pollination: Self-fertile (Self-fruitful); sets seedless fruit independently without requiring a second tree.
Harvest: Late Fall to Early Winter (November through December; fruit can hold the tree into January/February).
Yield: Extremely Heavy / "Bumper" Crop. Mature trees produce massive clusters of fruit (often needing branch support to prevent snapping); 80–180+ lbs (~300–700 mandarins) annually.
Storage / Shelf Life: Holds exceptionally well on the tree; stores in refrigeration (45°F–50°F) for 2 to 4 weeks.
Pruning: Low maintenance; prune light structural cuts in late winter to clear deadwood or lower weeping branches touching the ground. Temporary branch propping/staking is recommended during heavy harvest years.
