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ORNAMENTAL PLANTS OF HORTICULTURE VALUE

Selection of perennials

Senecio L.
Groudsel, ragwort
Asteraceae (Compositae)

A very large genus of about 1,240 species, distributed throughout the world. Senecio species are especially abundant in the Mediterranean, South Africa, Temperate Asia and the Americas. 69 species in the FSU, according the latest taxonomic treatment. Most are of wide distribution, many occur in the Caucasus and also in Siberia and the Far East. Endemics occur in the Caucasus, in Central Asia, in Siberia and the Far East. Perennials or annuals. A few species are of ornamental value.

S. cannabifolius Less.

Siberia (southeastern regions), Far East, China and Japan. Among shrubs, in meadows, in tall grass clearings.

Flowering stems up to 150-200 cm. Rhizome short, with numerous roots. Stem leaves 8-12 cm x 1-5 cm, almost sessile, pinnatisect with 2-3 pairs of lobs, tapered towards the base. Flower heads long-pedunculate, in a loose paniculiform corymb. Ray flowers 5, yellow. V - mid-spring to late autumn. Fl - in the wild and in St. Petersburg mid-summer, usually July. Fr - September. P - by division and by seed. Requires a sunny position and moist soil. Can create a herbaceous thicket as stems reach 250 cm in cultivation. Z 4 (3). New.

SELECTION OF PERENNIALS
 
 
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