CORYDALIS lutea

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CORYDALIS lutea

Yellow Corydalis
(PSEUDOFUMARIA)
Select Item No. CA658

Quantitative Restriction

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



Plant Description

Life Cycle: Perennial
Family: Papaveraceae
Origin: Eastern and Central Alps
Special Features: Exquisite foliage and long flowering season. Short-spurred blossoms. Great species for shady spots. Dissemination through ants in suitable places.
 
Basic Colour: (yellow / gold)
Flower Colour: yellow
Natural Flowering Period: May - September
Flowering: First year flowering
 
Winter Hardiness Zones: Z4 - Z8
Foliage: fern-like, greenish above, bluish-green below
Growth Habit: low-growing / bushy / evergreen
Height with Flowers: 20 cm
Spacing between Plants: 30 cm
Soil Requirements: moist / well-drained / average
Location:
Usage: for the rock garden
Grams per 1000 seeds: 1.66667 Gram
Seeds per Gram
(does not correspond to the number of plants!):
600
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
10 Gram
Sowing Rates/Trays: 6 per cell
Plug tray recommended size(s): open flats / 72
Sowing Direction:

(19) To stop the germination inhibition give seeds a warm compost (about +22°C) [about 72°F] with constant humidity for at least 6 weeks. Then keep cold (–4 to +4°C) [25 to 39°F] for 6–8 weeks. Usually, the germination starts at +4°C [39°F]. Raise temperatures gradually up to +10°C [50°F] until germination is completed. If the warm or cold period was not long enough the seeds will not germinate until the following year. They will then need another warm period (summer) and a cold period (winter). Well-known examples: Cimicifuga and Helleborus.

Sowing to Germination: 8 - 10 weeks
Germination to Transplant: 4 - 8 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: Some flowering will occur the first year without vernalization, but improved flowering will occur the 2nd year; and 3-10 weeks of cool temperatures might benefit fuller flowering in the first year.
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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