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Crocus tommasinianus 'Roseus'

early crocus 'Roseus'

'Roseus' is a cormous perennial 8-10cm high with tufted green leaves with a central silvery-white stripe, and cyclamen-pink flowers, silvery outside, with orange stigmas and stamens, from late winter to spring; crocuses are a good source of pollen for honeybees early in the season

Synonyms

Crocus tommasinianus var. roseus

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0–0.1 metre

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Iridaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Tufted
Potentially harmful: Ornamental bulbs - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Ornamental bulbs - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Crocus are dwarf, deciduous perennials growing from a corm, with linear leaves usually with a silvery central stripe, and goblet-shaped, sometimes fragrant flowers in autumn or early spring
Name status: Accepted

How to grow

Cultivation

Plant 8-10cm deep in autumn in gritty, poor to moderately fertile, well-drained soil, in full sun; C. tommasinianus and its forms increase freely, and are suitable for naturalising in grass, see bulbs: naturalising. See crocus cultivation for more advice

Propagation

Propagate by removing cormlets during dormancy; for more advice, see bulb propagation

Suggested planting locations and garden types

Gravel garden
Rock garden
Wildlife gardens
City and courtyard gardens
Cottage and informal garden
Patio and container plants
Banks and slopes
Flower borders and beds
Wall side borders

Pruning

No pruning required

Pests

May be susceptible to rodents and birds

Diseases

Generally disease-free, corms may rot in storage

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