DELPHINIUM grandiflorum 'Blauer Zwerg'

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DELPHINIUM grandiflorum 'Blauer Zwerg'

Tiny Blue Delphinium
[Blue Pygmy]
Select Item No. DA042

Available

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



Plant Description

Life Cycle: Perennial
Family: Ranunculaceae
Origin: Garden origin
Special Features: A wonderful low-growing delphinium, one of the best delphiniums for container production.
 
Basic Colour: (blue)
Flower Colour: gentian blue
Natural Flowering Period: June - August
Flowering: First year flowering
 
Winter Hardiness Zones: Z3 - Z8
Foliage: palmately compound
Growth Habit: upright, erect
Height with Flowers: 40 cm
Spacing between Plants: 40 cm
Soil Requirements: well-drained / average
Location:
Usage: for the rock garden / flowering pot plant
Grams per 1000 seeds: 1.11111 Gram
Seeds per Gram
(does not correspond to the number of plants!):
900
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
5 Gram
Sowing Rates/Trays: 4 per cell
Plug tray recommended size(s): 72 / 128 / 288
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 - 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") / 2-3 plugs per 15 cm (6")
Vernalization: No vernalization required for flowering in the first year.
Forcing: There has been no research, but 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. Some later flowering species can be forced in 14 - 16 weeks and perhaps sooner at warmer temperatures. Further experiments are warranted.
Fertilizer: Medium (150-200 ppm)
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