INCARVILLEA delavayi 'Alba'

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INCARVILLEA delavayi 'Alba'

Hardy Gloxinia
[Snow Top, Deli White]
Select Item No. IA042

Quantitative Restriction

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



Plant Description

Life Cycle: Perennial
Family: Bignoniaceae
Origin: China
Special Features: The white flowering form of the hardiest Incarvillea. Big and trumpet-like flower. Outstanding specimen plant.
Historical: This white cultivar falls true from seed through intensive selection in our company. It's comparable with the Netherland variety 'Snow Top'. Introduced by JELITTO PERENNIAL SEEDS in 1995.
 
Basic Colour: (white / cream)
Flower Colour: pure white with yellow throat
Natural Flowering Period: June - August
 
Winter Hardiness Zones: Z5 - Z8
Foliage: long (30 cm / 12''), once pinnate-paired leaflets
Growth Habit: erect / clumping
Height with Flowers: 50 cm
Spacing between Plants: 45 cm
Soil Requirements: alkaline / average / humus rich, fertile
Location:
Usage: for the rock garden
Grams per 1000 seeds: 3.22581 Gram
Seeds per Gram
(does not correspond to the number of plants!):
310
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 / 128
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 - 6 weeks
Transplanting to Potting: 4 - 10 weeks
Cutting back at Transplanting: Not Necessary.
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2")
Vernalization: There is no current research on vernalization but a prudent recommendation for any perennial would be 6-12 weeks (a few might need 15 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: Medium (150-200 ppm)
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