Habitat: cool shade
Soil: with plenty of humus
Height: 10 cm
Width: 20 cm
The petiolarid primulas (section Petiolares) are classic Himalayan (and Chinese) plants, thriving in cool, damp places (where there is humidity in the air as well as moisture at the roots), and complaining when it is hot and dry. But they are worth every effort to please, including some of the most beautiful and sought-after of all primulas. Many of them produce little seed in cultivation here, and so these ones are propagated by division, which they love, as they flourish in rich soil. Some kinds are evergreen, and make small mats of rosettes, with the mass of flowers at the centres, and others spend the winter as large resting buds, flowers and leaves appearing amazingly early in the year.
|Primula calderiana purple-flowered has attractive clusters of dark purple flowers with striking golden eyes.|
|Primula calderiana subsp. strumosa is in the griffithii sub-section, and has clusters of flowers on stems that are not much longer than the deep green leaves. Each flower is wide open, in this sub-species bright sulfur yellow, with a small ring of orange near the centre, but the species includes blue to purple-flowered plants. Greatly admired when seen in abundance in the wild in western Nepal, and in gardens - regrettably rarely in such abundance.|