Tulipa 'Union Jack' (5) | tulip 'Union Jack'

RHS 2003

Bulbs

A perennial bulb to 60cm in height, with glaucous-green foliage and creamy-white flowers with a broad, raspberry-red band on each petal; base white with a blue margin

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0-0.1 metre

Size

Time to Maturity: 1–2 years
Max Spread: 0-0.1 metre
Max Height: 0.5-1 metres

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: East–facing or South–facing
Exposure: 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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Liliaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Tufted
Potentially harmful: Harmful if eatenskin allergen. Wear gloves and other protective equipment when handling. Pets: Harmful if eatenskin allergen - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Tulipa are bulbous perennials with characteristic flowers, in a wide range of colours, in spring
Name Status: Accepted
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea: Single Late Group tulips (which include Darwin and Cottage tulips) flower in late spring, with cup-shaped or goblet-shaped flowers on tall stems

How to Grow

Cultivation

Plant 10 to 15cm deep in fertile, well-drained soil with shelter from strong winds and protection from excessive wet. See tulip cultivation for further advice

Propagation

Propagate by lifting and separating offsets. See bulb propagation for further advice

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Patio and container plants
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs, aphids and stem and bulb eelworm; squirrels may eat the bulbs

Diseases

May be susceptible to tulip fire and bulb rot in poorly drained soil