Eryngium planum 'Jade Frost'
Blue eryngo, Flat sea holly
Also known as Eryngium 'Jade Frost'
- Height × spread
- 0.75m × 0.4m
- Position
- Full sun
- Hardiness
- Very cold to -20C (RHS H6)
- Flowers
- Spring, Summer
Availability
Generally available in late Spring & Summer
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
A showy variegated eryngium that combines its exotic metallic blue flowers with variegated foliage. The plant has large oval basal leaves, coloured green with grey-green streaking. The leaf edge is cream and this turns bright pink in spring. The leaves on the long upright flowering spike become progressively smaller. These are variegated in green and cream shades. The flowers are a feature in June and July. Each blue 'thumb' is surrounded by a rim of dagger-like rays, highly picturesque. This form is recommended for cutting.
- Flower colour
- Blue
- Foliage colour
- Green, White
- Spring foliage
- Green-pink
- Variegated
- Yes
- Scent
- No
- Shape
- Column
- Height
- 0.75m
- Spread
- 0.4m
- Height in 10 years
- 0.65m
- Season of interest
- Spring, Summer
- Flowers in
- Spring, Summer
- Evergreen
- Deciduous
- Garden style
- Seaside garden, Prairie garden, Gravel garden
- Sun or shade
- Likes full sun
- Soil type
- Chalk, Loam (normal)
- Soil pH
- All types
- Drainage
- Well drained soil, Dry soil, Drought resistant
- Hardiness
- Very cold to -20C (RHS H6)
- Borders & containers
- Borders
- Use for
- Deer resistant, Rabbit resistant, Bee attraction, Butterfly attraction
- Hazards
- Yes, leaves are prickly
Spring
Spring-Autumn · Outdoors
Water in dry periods
Established plants in the ground can cope with 7-10 days of dryness, and shrubs often manage 2 to 3 weeks. Water one section of the garden thoroughly each day rather than a little everywhere. Check plants in pots more often, especially in hot weather.
Spring - early-mid · Planting
Divide when too large
The plant can be divided if it becomes too large or another plant is required. This may involve physically dividing the clump in two, removing offsets or small bulbs or dividing rhizomes. The new plants can be grown in pots or planted in the ground.
Summer
Summer - early · Outdoors
Feed a general fertiliser
Where plants have moderate needs for nutrients, they can simply be given a general feed, fairly early in the growth season so that the growth has plenty of time to harden off before the cold weather.
Give plants a general boost with the application of a general purpose fertiliser which is spread around the root area of the plant, with amounts as directed on the feed label.
Found in
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