Blackberry Rosoblack Prime | Rubus Fruticosus

Blackberry ‘Rosoblack Prime’ is a breakthrough thornless variety that brings sweet, flavourful berries to Cape Town gardens not once, but twice a year. Compact and upright in growth, it produces medium to large berries with a glossy black finish, low acidity, and a rich, balanced taste. Its thornless canes make harvesting easy and enjoyable, while its double-cropping habit ensures extended fruiting seasons that delight gardeners and food lovers alike.

Developed for productivity and ease, ‘Rosoblack Prime’ thrives in the Western Cape’s  climate. It flourishes in sunny positions with well-drained soil, enjoying the cool, wet winters and hot, dry summers that define Cape Town’s growing conditions.

Why You’ll Love It:

• Thornless canes for hassle-free harvesting
• Double-cropping habit with two fruiting seasons each year
• Medium to large berries with sweet, low-acid flavour
• Compact, upright growth suited to smaller gardens and containers
• Reliable performance in Cape Town’s climate

Planting & Care:

Plant your Blackberry ‘Rosoblack Prime’ in full sun with fertile, well-draining soil enriched with compost. Water regularly during the growing season, especially in Cape Town’s hot summers, and mulch to conserve moisture. Prune canes after fruiting to encourage new growth and maintain shape. In the Western Cape, delicate white blossoms appear in late spring (October–November). The first crop ripens from January through May, while a second crop develops in October–November on two-year-old plants, giving you two harvests in a single year.

Because ‘Rosoblack Prime’ fruits twice annually, you can enjoy fresh blackberries in both summer and spring. A rare treat that extends your berry season far beyond most varieties.