TROLLIUS chinensis 'Golden Queen'
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|Origin:||Russia, Mongolia, Northeastern China: grassy slopes.|
|Distinction:||Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.|
|Special Features:||Flowers like floating golden water lilies.|
|Basic Colour:||(yellow / gold)|
|Natural Flowering Period:||July - August|
|Winter Hardiness Zones:||Z4 - Z7|
|Foliage:||basal leaves petiolate, cordate, deeply fringed, 3-parted, coarsely serrate, deep green|
|Height with Flowers:||80 cm|
|Spacing between Plants:||60 cm|
|Soil Requirements:||moist / average / cool|
|Usage:||suitable for cutting|
|Grams per 1000 seeds:||1 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|
(2) Most species of the Ranunculus-family need lower temperatures during the cooling-period – about –5°C [23°F]. In other respects follow the directions in 1. above. The reason is probably the freezing point of these seeds, which is at –7°C [19°F], while most other seeds freeze at –5°C [23°F].
(1) Cold-germinators are still referred to as frost-germinators, although this isn’t quite correct. The sowing must be kept warm (about +18 to +22°C) [about 64 to 72°F] and moist for the first 2–4 weeks. After this period the sowing must be kept at a cold temperature (between –4 and +4°C) [between 25 and 39°F] for another 4–6 weeks. Colder temperatures of –5°C [23°F] are only advantageous for most species of the Ranunculus family. It is not so important if the temperature is higher or lower during the cooling period, but the cooling period has to be prolonged because the synthesis of the germination inducer, hormon-like acid, slows down or comes to a standstill.
|Best Sowing Date
(northern Hemisphere, Field condition):
|late autumn - early spring|
|Sowing to Germination:||9 - 12 weeks|
|Germination to Transplant:||4 - 8 weeks|
|Transplanting to Potting:||6 - 10 weeks|
|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")|
|Fertilizer:||Medium (150-200 ppm)|