Asplenium
Asplenium er ættkvísl um 700 burknategunda í Aspleniaceae ættinni og er af flestum grasafræðingum talin eina ættkvísl ættarinnar. Þetta er breytileg ættkvísl með nokkrum undirflokkum, sem stundum eru flokkaðar sem sér ættkvíslir.
in Iceland
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Gardening
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Centaurea dealbata
Persian Cornflower
syn. Knapweed
Asteraceae
Height
80 - 100 cm
Flower colour
lilac pink
Flowering time
late August - September
Foliage colour
green with silver reverses
Sunlight
sun
Soil
well drained, poor
pH
acid - neutral - alkaline
Hardiness
hardy
Plant range
Caucasus
Centaurea is a large genus of around 350 - 600 species in the family Asteraceae. Species of this genus are native to the northern hemisphere, mainly centered in the Middle East. The flowers are composite flowers consisting of central disc flowers which are fertile, surrounded by steril ray flowers.
Propagation:
Division in spring.
Seed sown in March.
Seed just covered and kept at 20°C (68°F) until germination. After germination it should be kept at a lower temperature with plenty of light so the plants won't become lanky.
A tall perennial that forms a wide clump of green, feathered leaves with silver reverses with lilac pink flowers. It needs good support or the entire clump will topple over. It needs plenty of sun and grows best in well drained, fairly poor soil. It is very drought tolerant and doesn't tolerate very wet soil.
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