We're offering you a Crocus Yellow Mammoth Bulbs up to 80 for £6.99, saving you up to 30% off Thompson and Morgan's's price of £9.99 (correct as of 10.09.2025).

Enjoy Spring's Golden Glow, Loved by Bees and Gardeners - Choose up to 80 Bulbs!

Bring Early Colour to Your Garden with Crocus Yellow Mammoth

The Crocus flavus 'Yellow Mammoth' is a vibrant perennial bulb known for its large, golden-yellow goblet flowers that signal the start of spring. Proudly awarded the RHS Award of Garden Merit, this variety is celebrated for its reliable performance and strong growth in UK gardens.

Why Choose Yellow Mammoth Crocus?

• Bright Spring Impact: These bulbs bloom from late February through March, bringing a cheerful splash of colour when most gardens are still waking up.
• Supports Wildlife: Flowers provide an essential early nectar source for bees and other pollinators.
• Effortless Naturalising: Plant in grass, under trees, or in borders—bulbs multiply over time for increasingly dramatic displays each year.
• Container Friendly: Perfect for pots and window boxes, allowing you to enjoy their radiant blooms up close.

Growing Guide & Care Tips

• Planting Time: Best planted in autumn (September–November) before the ground freezes.
• Location: Thrives in full sun or light dappled shade. Ideal beneath deciduous trees or in open lawns.
• Soil: Prefers well-drained soil; tolerates a range of pH levels but avoid heavy, waterlogged ground.
• Mature Size: Each bloom stands approximately 10–15cm tall.
• Hardiness: Fully hardy across the UK (RHS H5/USDA Zone 4–8).
• Care: Allow foliage to die back naturally after flowering to feed next year’s bulbs. Minimal maintenance required—no regular pruning needed.

Design Inspiration & Companion Plants

• Crocus Yellow Mammoth pairs beautifully with snowdrops () and early daffodils (Narcissus) for layered spring displays.
• Sow in drifts through lawns or group under shrubs for a naturalised woodland effect.
• Add to patio containers alongside grape hyacinths (Muscari) or primroses () for continuous colour from late winter into spring.

FAQs

• When should I plant Crocus Yellow Mammoth bulbs?
  Plant bulbs in autumn (September–November) before the first frost for best results.
• How deep should I plant these bulbs?
  Plant each bulb around 8–10cm deep and 5–8cm apart in well-drained soil.
• Will they come back every year?
  Yes! Crocus naturalise easily and will return—and often multiply—each spring with minimal care.