Practical
Plants

Chrysanthemum marshallii

a perennial member of the Chrysanthemum genus in the family Compositae.

No photo available

Taxonomy and growth

Life cycle
perennial
Fertility
Insects
Flower type
hermaphrodite
Pollinators
Insects

Uses

Material uses

This section contains historical Plants For A Future notes marked noncommercial.

The dried flower heads (actually the yellow inner petals[K]) are used to make the insecticide 'pyrethrum'[3].

Product or use
Insecticide

Environment

Range
Europe to W. Asia - Caucasia.
Habitat
Not known
Light
full sun
Shade tolerance
light shade
Water
moderate
Soil textures
sandy, loamy, clay
Soil pH
acid, neutral, alkaline
Drainage
well drained
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

Seed - surface sow in a greenhouse or cold frame in the spring. If the seed does not germinate within 4 weeks it can be chilled for 3 weeks at about 3°c and then be returned to the greenhouse[2]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out into their permanent positions in the summer. Division in spring. Larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the summer or following spring.

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it could succeed outdoors in many parts of this country. It is quite probable that this plant properly belongs to the genus Tanacetum[K]. The following notes are based on the general needs of the genus. Succeeds in ordinary garden soil[1]. Prefers a well-drained fertile soil in full sun[4].

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

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  2. Bird. R. (Editor) Growing from Seed. Volume 4. Thompson and Morgan. 1990-00-00

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  3. Hill. A. F. Economic Botany. The Maple Press 1952-00-00

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  4. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

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