ALCEA (ALTHAEA) rosea var. nigra

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ALCEA (ALTHAEA) rosea var. nigra

Black Hollyhock
[Jet Black, Arabian Nights]
Select Item No. AO308

Also available as:

Available

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



Plant Description

Article Type: (Organic Seed DE-ÖKO-006)
Life Cycle: Perennial
Family: Malvaceae
Origin: Turkey to Asia
Special Features: Deepest maroon color, appearing nearly black in color, single. Tremendously popular old-fashioned perennial.
 
Basic Colour: (grey / black)
Flower Colour: black-red
Natural Flowering Period: May - October
Flower: single
 
Winter Hardiness Zones: Z3 - Z9
Foliage: orbicular, shallowly lobed
Growth Habit: upright, erect
Height with Flowers: 180 cm
Spacing between Plants: 60 cm
Soil Requirements: well-drained / average
Location:
Characteristics: medicinal plant / beneficial plant / tea herb / culinary herb
Usage: honey-bee food plant
Grams per 1000 seeds: 11.11111 Gram
Seeds per Gram
(does not correspond to the number of plants!):
90
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
25 Gram
Sowing Rates/Trays: 2 - 3 per cell
Plug tray recommended size(s): 72 / 128
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):
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 once 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: 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: Medium (150-200 ppm)
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