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Herbaceous Perennial

Eryngium planum 'Tiny Jackpot'

A compact, clump-forming, bushy deciduous perennial to around 45cm in height, with rosettes of dark green, veined leaves. Clusters of small, lavender-purple flowerheads with spikey purple bracts appear on strong stems, in mid to late summer. This compact variety is ideal for pots and containers or in a rock or alpine garden

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Ultimate height

0.1–0.5 metres

Time to ultimate height

1–2 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Sheltered

Drought resistance

Yes

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: Apiaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Eryngium can be annuals, biennials or perennials with simple or divided leaves, often spiny edged, and cone-like flower-heads often surrounded by an involucre of conspicuous spiny bracts
Name status: Unresolved

How to grow

Cultivation

Grow in dry, well-drained poor to moderately fertile soil in full sun, with protection from winter wet

Propagation

Propagate by seed in containers in a cold frame as soon as ripe; insert root cuttings in late winter; propagate by division during spring, although they may be slow to re-establish

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Gravel garden
Patio and container plants
Rock garden
Wildlife gardens
Cut flowers
Flower borders and beds

Pruning

Tidy plants after flowering; ideal for flower arranging - cut the stems before the flowers are fully open

Pests

May be susceptible to leaf and bud eelworms, and slugs and snails

Diseases

May be susceptible to root rot and powdery mildews

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