ERYNGIUM planum 'Blaukappe'

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ERYNGIUM planum 'Blaukappe'

Sea Holly
[Blue Cap, Tetra Petra]
Select Item No. EA169

Available

One Portion is usually sufficient for approx. 50 plants.
Please switch to gram for larger quantities.



Plant Description

Life Cycle: Perennial
Family: Apiaceae
Origin: Central and Southeastern Europe; Central Asia
Special Features: Intense blue flowers on wiry stems. Architecturally interesting round blossoms with spiny bracts. Outstanding as a cut flower.
Historical: Introduced by JELITTO PERENNIAL SEEDS in 1992. Originating from the sterile cultivar, 'Blauer Zwerg' (Blue Dwarf), this introduction grows a bit taller but can be easily produced by seed.
 
Basic Colour: (blue)
Flower Colour: intense blue
Natural Flowering Period: June - September
 
Winter Hardiness Zones: Z4 - Z8
Foliage: roundish, leathery, dark green basal leaves, almost spiny palmate-like, upper leaves
Growth Habit: erect / sturdy
Height with Flowers: 70 cm
Spacing between Plants: 46 cm
Soil Requirements: dry / well-drained / average
Location:
Usage: honey-bee food plant / suitable for cutting
Grams per 1000 seeds: 1.44928 Gram
Seeds per Gram
(does not correspond to the number of plants!):
690
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
10 Gram
Sowing Rates/Trays: 2 - 3 per cell
Plug tray recommended size(s): open flats / 72
Sowing Direction:

(15) Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Do not cover very small seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs.

Best Sowing Date
(northern Hemisphere, Field condition):
late autumn - early spring
Sowing to Germination: 4 - 8 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Potting: 6 - 8 weeks
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2")
Fertilizer: Medium (150-200 ppm)
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