LEWISIA Cotyledon-Hybr. 'Regenbogen'

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LEWISIA Cotyledon-Hybr. 'Regenbogen'

Lewisia
[Rainbow]
Select Item No. LA124

Also available as:

Available

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



Plant Description

Life Cycle: Perennial
Family: Portulacaceae
Origin: USA: California and Southwest Oregon
Special Features: Mixture of many newly bred colors and forms. The best existing cotyledon hybrids today. Round flowers also semi-double. A very attractive plant for container production and will have impulse appeal in garden centres. Gold medal prize winner at the IGA in Stuttgart 1993 (Krämer). In warmer conditions a northern exposure with a cool root run is preferred.
Historical: Introduced by JELITTO PERENNIAL SEEDS in 1989. The genus is named after Virginian, Meriwether Lewis, leader of the Lewis and Clark expedition, the first to cross the North American continent in 1804-1806.
 
Basic Colour: (mixture)
Flower Colour: mixture of white and yellow to pink, red-orange to blue-red
Natural Flowering Period: April - June
Flowering: First year flowering
Flower: single / semi-double
 
Winter Hardiness Zones: Z5 - Z8
Foliage: succulent, leaves form a starfish-like rosette
Growth Habit: rosettes-forming / flat / evergreen
Height with Flowers: 25 cm
Spacing between Plants: 30 cm
Soil Requirements: dry / well-drained / average
Location:
Usage: for the rock garden / flowering pot plant
Grams per 1000 seeds: 0.58824 Gram
Seeds per Gram
(does not correspond to the number of plants!):
1700
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
2 Gram
Sowing Rates/Trays: 4 per cell
Plug tray recommended size(s): 72 / 128
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):
late autumn - early spring
Sowing to Germination: 8 - 10 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Not Necessary.
Container Size(s): 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2")
Vernalization: A prudent recommendation would be to provide 6-12 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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