Sonnenbeere Beefsteak Tomato (Solanum lycopersicum) – Exceptionally Sweet German Heirloom

Botanical Name: Solanum lycopersicum
Common Name: Sonnenbeere Tomato
Heirloom | Open-Pollinated | Non-GMO | Annual

Discover the delightful Sonnenbeere, a rare German heirloom beefsteak tomato renowned for its large, juicy fruits and exceptional sweetness. Bearing vibrant yellow to golden-orange, slightly ribbed fruits, this variety brings a burst of sunshine and rich flavour to your garden or polytunnel.

Horticultural Points

• Fruit Type: Large beefsteak with meaty, juicy flesh
• Colour: Bright yellow to golden-orange
• Flavourr: Distinctly sweet and mild, perfect for fresh eating
• Plant Size: Indeterminate, vigorous growth requiring support
• Days to Maturity: 75–90 days from transplant under protection
• Yield: High, producing abundant clusters of flavourful fruit

Growing Information (Ideal for Irish Conditions)

• Sow: Indoors late winter (Feb–Mar) for transplant after last frost
• Grow: In a greenhouse or heated polytunnel for best results
• Soil: Well-drained, fertile soil enriched with organic matter
• Water: Keep consistently moist, but avoid waterlogging
• Feeding: Regular, balanced feeding promotes sweet, large fruits
• Spacing: 45–60 cm between plants
• Support: Stake or cage plants and prune suckers for optimal airflow

Historical Background

Sonnenbeere translates to “sun berry,” reflecting its bright sunny colour and sweet flavour. This heirloom tomato is part of Germany’s rich tradition of seed-saving, prized for its exceptional taste and adaptability in cooler climates. It’s a perfect choice for Irish gardeners seeking a deliciously sweet beefsteak tomato.