VIOLA sororia 'Rubra'
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|Origin:||The species occurs in the Eastern half of Canada and the United States.|
|Special Features:||Bright rubin-red flowers. Suitable for natural landscaping. Use for low maintenance plantings. Moderate self-sowing at suitable locations. Suitable for pot and planter. Attractive for butterflies and other pollinators. Deer resistant. Erosion control. Deer resistant. Easy to grow.|
|Basic Colour:||(red / scarlet / purple)|
|Natural Flowering Period:||April - May|
|Winter Hardiness Zones:||Z3 - Z8|
|Foliage:||Dark green, heart-shaped.|
|Growth Habit:||stoloniferous / clumping / low-growing|
|Height with Flowers:||15 cm|
|Spacing between Plants:||25 cm|
|Usage:||for the rock garden|
|Grams per 1000 seeds:||1.53846 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):
(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.
|Container Size(s):||1 plug per 8/9 cm (3 1/2")|
|Fertilizer:||Medium (150-200 ppm)|