ARGEMONE platyceras

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ARGEMONE platyceras

Prickly Poppy, Wide Horn Poppy
(mexicana var. aculeatissima)
Select Item No. AO858

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: Biennial
Family: Papaveraceae
Origin: Western North America: roadsides, plains.
Special Features: Prickly Poppy, large, saucer-shaped pure white flowers, bluish green foliage. Drought tolerant/ for xeriscaping/ water-wise design. Suitable for natural landscaping. Use for low maintenance plantings. Moderate self-sowing at suitable locations. Easy to grow.
 
Basic Colour: (white / cream)
Flower Colour: white
Natural Flowering Period: June - October
 
Winter Hardiness Zones: Z3 - Z9
Foliage: bluish green, prickles on leave tips, showy.
Growth Habit: open, airy
Height with Flowers: 40 cm
Spacing between Plants: 10 cm
Soil Requirements: dry
Location:
Characteristics: medicinal plant / culinary herb
Usage: honey-bee food plant
Grams per 1000 seeds: 4 Gram
Seeds per Gram
(does not correspond to the number of plants!):
250
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): 72
Sowing Direction:

(1) Cold-germinators are still referred to as frost-germinators, although this isn’t quite correct. The sowing must be kept warm (about +18 to +22°C) [about 64 to 72°F] and moist for the first 2–4 weeks. After this period the sowing must be kept at a cold temperature (between –4 and +4°C) [between 25 and 39°F] for another 4–6 weeks. Colder temperatures of –5°C [23°F] are only advantageous for most species of the Ranunculus family. It is not so important if the temperature is higher or lower during the cooling period, but the cooling period has to be prolonged because the synthesis of the germination inducer, hormon-like acid, slows down or comes to a standstill.
It is beneficial to cover the sowing with snow during the cooling-period. The temperature below it usually keeps in the optimum range of –4 to 0°C [25 to 32°F]. The sowing is kept moist, and the melting snow helps to destroy the shell, which is advantageous for the germinating seedling. After this cooling-period the sowing may not be immediately exposed to high temperatures. The most effective temperatures are between +5 to +12°C [41 to 54°F], even if germination has started. The best location for this sowing, even in March, April and May, is the open field, the cold frame or a cold greenhouse.

Best Sowing Date
(northern Hemisphere, Field condition):
early spring - late summer
Cutting back at Transplanting: Not Necessary.
Container Size(s): 1 plug per 8/9 cm (3 1/2")
Fertilizer: Light (100-150 ppm)
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