ASCLEPIAS tuberosa 'Hello Yellow'

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ASCLEPIAS tuberosa 'Hello Yellow'

Butterfly Weed, Pleurisy Root, Silk Weed
Select Item No. AA986

Available

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



Plant Description

Life Cycle: Perennial
Family: Asclepiadaceae
Origin: North America
Special Features: Yellow blooms - the first time as a single color, drought resistant, cut flowers, and decorative seed pods.
 
Basic Colour: (yellow / gold)
Flower Colour: yellow to orange-yellow shade
Natural Flowering Period: June - August
Flowering: First year flowering
 
Winter Hardiness Zones: Z3 - Z8
Foliage: dark green, hairy stems, lanceolate
Growth Habit: deep roots
Height with Flowers: 60 cm
Spacing between Plants: 60 cm
Soil Requirements: gritty / well-drained / rocky / average
Location:
Usage: suitable for cutting
Grams per 1000 seeds: 6.25 Gram
Seeds per Gram
(does not correspond to the number of plants!):
160
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
15 Gram
Sowing Rates/Trays: 2 per cell
Plug tray recommended size(s): 72 / 128
Sowing Direction:

(9) These seeds germinate rapidly depending on species and origin. If germination does not occur after 3–4 weeks a cooling period of 2–4 weeks is recommended.

Best Sowing Date
(northern Hemisphere, Field condition):
late autumn - early spring
Sowing to Germination: 4 - 6 weeks
Germination to Transplant: 2 - 4 weeks
Transplanting to Potting: 4 - 6 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: 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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