Raspberry ‘Red Mammoth’ (Rubus idaeus ‘Red Mammoth’) is a vigorous, prairie-hardy, summer-bearing raspberry bred for large fruit size and reliable production in cold climates. It produces exceptionally large, bright red berries with a rich, sweet flavour on upright, strong canes that are relatively easy to harvest. The plant forms a productive, suckering patch over time, making it ideal for home gardens and small fruit production. Its heavy yields and excellent cold tolerance make it especially well-suited to Saskatchewan growing conditions.
- Size: Height: 1.5–2 m (5–6.5 ft). Spread: 1–1.5 m (3–5 ft), spreading by suckers
- Habit: Upright, cane-forming perennial
- Light: Full sun for best fruiting
- Water: Moderate; consistent moisture is important during flowering and fruiting
- Soil: Well-drained, fertile soil with added organic matter; slightly acidic preferred
- Maintenance: Remove spent (second-year) canes after harvest; thin new canes to improve airflow
- Support: Trellising recommended to support heavy fruit loads
- Hardiness: Zone 2–3, excellent for prairie climates
- Harvest: Mid to late summer (typically July)