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Jelitto · Seeds of more than 3700 different species and varieties
TROLLIUS laxus var. albiflorus
Plant Description
| Life Cycle: | Perennial |
| Family: | Ranunculaceae |
| Origin: | Northwestern North America: open wet places. |
| Special Features: | Bowl-shaped blossoms. |
| Basic Colour: | (white / cream) |
| Flower Colour: | pure white |
| Natural Flowering Period: | May - July |
| Winter Hardiness Zones: |
Z3 - Z8
|
| Foliage: | basal leaves sessile or petiolate, 3-5-parted, serrate, green |
| Height with Flowers: | 30 cm |
| Soil Requirements: | moist |
| Location: | |
| Usage: | for the rock garden |
| Portion weight: | 0.124 Gram |
| Grams per 1000 seeds: | 0.90909 Gram |
| Seeds per Gram (does not correspond to the number of plants!): |
1100 |
| Gram to get 1000 plants (if sown directly into pots etc. you will need a larger quantity): |
3 Gram |
| Sowing Direction: |
(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.
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