LEONTOPODIUM alpinum

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LEONTOPODIUM alpinum

Edelweiss
Select Item No. LA100

Quantitative Restriction

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



Plant Description

Life Cycle: Perennial
Family: Asteraceae
Origin: European Mountains
Special Features: Fuzzy grey-green foliage and densely pubescent, pure white star-like flowers. Full sun in cool summer climates to semi-shade elsewhere.
Historical: Who can forget Maria von Trapp (Julie Andrews) and the song, Edelweiss, in the movie, The Sound of Music?
 
Basic Colour: (white / cream)
Flower Colour: white
Natural Flowering Period: July - September
 
Winter Hardiness Zones: Z4 - Z7
Foliage: grey-green and fuzzy, white felt-like
Growth Habit: clumping / compact
Height with Flowers: 15 cm
Spacing between Plants: 20 cm
Soil Requirements: well-drained / average
Location:
Usage: for the rock garden / suitable for cutting
Grams per 1000 seeds: 0.125 Gram
Seeds per Gram
(does not correspond to the number of plants!):
8000
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
1 Gram
Sowing Rates/Trays: 8 per cell
Plug tray recommended size(s): 128 / 288
Sowing Direction:

(4) These are very tiny seeds which should be mixed with finest sand or talcum for an even sowing. Do not cover with compost, only press them in gently. Irrigate from the bottom or with a hand-sprayer, so that the seeds will not be washed away.

(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: 4 - 8 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Cut-back once to keep more compact.
Container Size(s): 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2")
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: An obvious place to experiment - following vernalization - would be raising daytime temperatures to 60° - 65°F (15° - 17°C). Provide 16 hours of continuous lighting. During the short days of winter, provide a night interruption lighting of 4 hours between 10:00 p.m. and 2:00 a.m.
Fertilizer: Light (100-150 ppm)
Jelitto · Seeds of more than 3700 different species and varieties

 

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