GENTIANA triflora var. japonica

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GENTIANA triflora var. japonica

Gentian
Select Item No. GA190

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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: Gentianaceae
Origin: East Asia, Japan, Korea, Kuril Islands, Sakhalin: mountainous regions.
Special Features: GENTIANA triflora var. japonica has strong upright growing stems, axillary bell-shaped flowers, blue to light blue, 6cm high. Prefers semi-shaded, moist, humus, lime-free locations. Optimal cut flower with long shelf life. Requires similar conditions as GENTIANA scabra.
 
Basic Colour: (blue)
Flower Colour: bright blue
Natural Flowering Period: August - September
 
Winter Hardiness Zones: Z5 - Z9
Foliage: elliptic basal leaves, decussate, strong green
Growth Habit: erect
Height with Flowers: 80 cm
Spacing between Plants: 40 cm
Soil Requirements: avoid lime / acidic / well-drained / average / humus rich, fertile
Location:
Usage: suitable for cutting
Grams per 1000 seeds: 0.03571 Gram
Seeds per Gram
(does not correspond to the number of plants!):
28000
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
0.5 Gram
Plug tray recommended size(s): open flats / 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.

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 plugs per 15 cm (6")
Fertilizer: Medium (150-200 ppm)
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