Description
Oscar Mulberry is one of the rare varieties noted for being enjoyable even at the red stage (with a raspberry-like flavor), then deepening to rich sweetness when fully black as it finishes.
That two-stage eating quality makes Oscar unusually forgiving. You still get the best richness when berries are fully black and soft, but you’re not forced into a tiny harvest window where everything has to be perfectly finished on the same day.
Oscar ripens early and produces heavily once established. The tree is vigorous, but it responds well to pruning and can be maintained at a practical home-orchard size with annual training.
Overview
- Distinctive red-stage flavor (often described as raspberry-like)
- Deepens to richer sweetness as berries finish to black
- Very early ripening mulberry
- Heavy producer once established
- Prunes well for size management
Growing Details
Latin Name: Morus alba × Morus rubra ‘Oscar’
Site and Soil: 1/2 day to full day of sun; well-drained soil
Hardiness: Hardy to USDA Zone 5
Rootstock: Russian mulberry (Morus alba tatarica)
Bearing Age: 1–3 years
Size at Maturity: Typically 15–20 ft tall and wide with pruning and training
Flowering: Spring; inconspicuous catkins (not showy)
Ripening Time: Very early; early summer; timing varies by climate
Pollination: Self-fertile
Pests & Diseases: Generally low-maintenance with few serious issues
Yield: Productive once established
Additional Notes
- Grower’s Insight: Oscar is often credited as being introduced by naturalist Oscar Clark—one of the reasons it has such a long-standing reputation among collectors as a true “eating mulberry,” not just a novelty tree.
- Regional Insight: Performs especially well in temperate regions with strong spring sun and early warmth; in cooler-summer climates, full sun helps push sweetness and finish berries to their best black-ripe flavor.
- For the best eating experience, sample at the red stage, then compare again when fully black and soft—Oscar is one of the rare mulberries that rewards both.
- Mulberries can stain when dropped—place away from patios, driveways, and light-colored hardscape.
- Explore more mulberries in our collection: Mulberry Trees
