INULA helenium

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INULA helenium

Elecampanae, Horseheal, Elf Dock

Select Item No. IA058

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Available

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



Plant Description

Life Cycle: Perennial
Family: Asteraceae
Origin: Europe and Asia
Special Features: Statuesque perennial with bold leaves and yellow daisies. An excellent selection for naturalizing.
Historical: Medicinal antiseptic uses reported and is also an ingredient in the production of absinthe.
 
Basic Colour: (yellow / gold)
Flower Colour: yellow
Natural Flowering Period: July - October
 
Winter Hardiness Zones: Z3 - Z8
Foliage: large basal leaves up to one meter long
Growth Habit: upright, erect
Height with Flowers: 150 cm
Spacing between Plants: 90 cm
Soil Requirements: dry / well-drained
Location:
Characteristics: medicinal plant / culinary herb
Usage: honey-bee food plant
Grams per 1000 seeds: 1.63934 Gram
Seeds per Gram
(does not correspond to the number of plants!):
610
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
5 Gram
Sowing Rates/Trays: 2 - 3 per cell
Plug tray recommended size(s): 128 / 288
Sowing Direction:

(16) See 15 with the exception of germination being slower and more irregular. This poses no problems.

(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):
Anytime
Sowing to Germination: 2 - 3 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Potting: 6 - 8 weeks
Cutting back at Transplanting: Cut back 1-2 times; once at transplanting; once again 4 weeks later to keep more compact.
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2") / 2-3 plugs per 15 cm (6")
Vernalization: There is no current research on vernalization but a prudent recommendation for any perennial would be 6-12 weeks (a few might need 15 weeks!) at an average daily temperature of 40°F (5°C). Exposure to cold may not be necessary for flowering but might improve quality.
Forcing: This species is not a suitable candidate for forcing.
Fertilizer: Medium (150-200 ppm)
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