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|Origin:||Western North America|
|Special Features:||Flower stalks with numerous adventitious yellow buds and glossy green foliage with reddish tinge in winter. Interesting self-sowing choice for green roofs.|
|Basic Colour:||(yellow / gold)|
|Flower Colour:||pale yellow|
|Natural Flowering Period:||June - August|
|Winter Hardiness Zones:||Z5 - Z8|
|Foliage:||glossy green with reddish tinge|
|Growth Habit:||groundcover / clumping / dwarf|
|Height with Flowers:||15 cm|
|Spacing between Plants:||25 cm|
|Soil Requirements:||gritty / well-drained|
|Usage:||for the rock garden|
|Grams per 1000 seeds:||0.12987 Gram|
|Seeds per Gram
(does not correspond to the number of plants!):
|Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
|Sowing Rates/Trays:||3 - 4 per cell|
|Plug tray recommended size(s):||128 / 288|
(4) These are very tiny seeds which should be mixed with finest sand or talcum for an even sowing. Do not cover with compost, only press them in gently. Irrigate from the bottom or with a hand-sprayer, so that the seeds will not be washed away.
(16) See 15 with the exception of germination being slower and more irregular. This poses no problems.
(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):
|Sowing to Germination:||3 - 4 weeks|
|Germination to Transplant:||4 - 6 weeks|
|Transplanting to Potting:||6 - 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:||This species is not a suitable candidate for forcing.|
|Fertilizer:||Light (100-150 ppm)|