Blueberry (Vaccinium corymbosum x Vaccinium darrowii) PRIMADONNA®

Blueberry (Vaccinium corymbosum hybrid) 'Primadonna'

Extremely early and high-yielding "First Lady" with outstanding fruit firmness.

'Primadonna' (patent US PP12816) is a modern Southern Highbush variety from the University of Florida program (released in 2002). Its name reflects its standing as one of the earliest varieties on the market, ripening approximately 10 days before the industry standard 'Star'. It is highly valued by commercial growers for its extreme firmness and ability to withstand long-distance shipping, as well as by home gardeners in warm climates for its minimal chill requirement.

Key Highlights:

• Extreme earliness: Opens the blueberry harvest season.
• Outstanding firmness: Fruits are highly resistant to bruising and softening.
• Large fruits: Average weight around 2.0 g.
• Extremely low chill requirement: Needs only about 100 chill hours.
• High yield (up to 5.5 kg per bush).

Origin and Registration

• Origin: USA (University of Florida). Released in 2002, patented.

Variety Characteristics

Bush

• Growth: Strong and vigorous, with a semi-erect habit.
• Chill hours: Very low (approx. 100 hours), ideal for subtropical and very warm regions.
• Productivity: High and regular, averaging 4.5 to 5.5 kg per mature bush.

Fruit

• Size and Weight: Large to very large, approx. 2.0 g.
• Color: Attractive light blue.
• Flesh and Firmness: Extremely firm flesh, perfect for commercial markets and shipping.
• Flavor: Sweet with low acidity (distinct from high-acid, balanced varieties).

Resistance and Requirements

• Resistance: Good resistance to major blueberry diseases.
• Risk: Due to very early flowering, there is a high risk of frost damage during late spring freezes.

Cultivation Recommendations

• Pollination: The variety benefits from cross-pollination. Recommended pollinators include 'Star' or 'Millennia'.

Harvest and Storage

• Harvest time: Very early (approx. 10 days before 'Star').
• Storage: Excellent due to the superior firmness of the fruit.