OENOTHERA macrocarpa

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OENOTHERA macrocarpa

Ozark Sundrops
(missouriensis)
Select Item No. OA026

Also available as:

Available

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



Plant Description

Life Cycle: Perennial
Family: Onagraceae
Origin: Southern Great Plains/USA: Oklahoma, Kansas and Missouri
Distinction: Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.
Special Features: Large (10 cm) saucer-shaped, golden-yellow flowers, large torpedo-like seed heads. Will handle dry, sun-baked conditions.
 
Basic Colour: (yellow / gold)
Flower Colour: golden yellow
Natural Flowering Period: June - September
Flowering: First year flowering
 
Winter Hardiness Zones: Z4 - Z8
Foliage: undulating, elliptic or lanceolate, green
Growth Habit: stoloniferous / low-growing
Height with Flowers: 20 cm
Spacing between Plants: 20 cm
Soil Requirements: dry / well-drained
Location:
Characteristics: groundcover
Usage: for the rock garden
Grams per 1000 seeds: 5 Gram
Seeds per Gram
(does not correspond to the number of plants!):
200
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
15 Gram
Sowing Rates/Trays: 3 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):
Anytime
Sowing to Germination: 4 - 8 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Not Necessary.
Container Size(s): 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: Light (100-150 ppm)
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