Crocus tommasinianus Ruby Giant

One of the finest and most widely admired crocuses for naturalising, Crocus tommasinianus 'Ruby Giant' produces masses of rich ruby-purple flowers that brighten the garden from late winter into early spring.

A larger and more intensely coloured form of the species, 'Ruby Giant' is treasured for its vigorous growth, reliable flowering and remarkable ability to spread naturally. The elegant goblet-shaped blooms open wide in sunshine, revealing glowing golden stamens that provide an invaluable source of nectar and pollen for early bees emerging after winter.

Originally selected from the beautiful Crocus tommasinianus, this award-winning variety is particularly effective when planted in large drifts beneath deciduous trees, through lawns or along woodland paths. Over time, the corms multiply freely and often self-seed, creating spectacular carpets of colour that return year after year with little attention.

Unlike some larger crocus varieties, 'Ruby Giant' is often less attractive to squirrels and other wildlife, making it one of the easiest and most reliable crocuses to establish. Its rich purple colouring combines beautifully with snowdrops, winter aconites and other early-flowering bulbs.

A truly outstanding crocus that deserves a place in every spring garden.

Planting Instructions

When to Plant:

Plant Crocus corms in autumn, ideally between September and November, before the ground freezes.

Where to Plant:
Choose a position in full sun or partial shade with well-drained soil. Crocuses are ideal for borders, rock gardens, containers and naturalising in lawns or beneath deciduous trees.

How to Plant:

• Depth: Plant corms approximately 5–8 cm (2–3 inches) deep.
• Spacing: Space corms about 5–8 cm (2–3 inches) apart.
• Soil Prep: Improve heavy soils with grit or sharp sand to ensure good drainage.

Watering:
Water after planting to settle the soil. Once established, Crocus corms require very little additional watering.

Aftercare Tips:

• Allow foliage to die back naturally after flowering.
• If planted in grass, avoid mowing until the leaves have yellowed.
• Leave clumps undisturbed to encourage natural multiplication and self-seeding.

Top Tip:
Plant in generous drifts beneath trees or throughout lawns for a breathtaking carpet of ruby-purple flowers that will increase year after year.

Plant Details

Flowering Period:
February – March (depending on season and conditions)

Height:
4–6" (10–15cm) (approx.)

Position:
Full sun or partial shade

Hardy Perennial