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Tanacetum_cinerariifolium - (Trevir.)Sch.Bip.

Common Name Dalmation Pellitory, Pyrethrum
Family Asteraceae or Compositae
USDA hardiness 5-9
Known Hazards Some people are highly allergic to this plant[160]. Prolonged contact with the dried flowers can lead to allergic dermatitis, allergic rhinitis and asthma in humans[268].
Habitats Rocky ground[50], usually by the seashore[4].
Range Europe - Dalmatia, Yugoslavia.
Edibility Rating    (0 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care
Fully Hardy Well drained soil Moist Soil Full sun
Tanacetum_cinerariifolium Dalmation Pellitory, Pyrethrum


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Tanacetum_cinerariifolium Dalmation Pellitory, Pyrethrum
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Summary


Physical Characteristics

 icon of manicon of flower
Tanacetum_cinerariifolium is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.5 m (1ft 8in).
It is hardy to zone (UK) 6 and is not frost tender. It is in flower from July to September, and the seeds ripen from August to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, flies. The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil. The plant can tolerate maritime exposure.

Synonyms

Chrysanthemum cinerariifolium. Pyrethrum cinerariifolium.

Habitats

Edible Uses

None known

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



Dalmatian pellitory is not used medicinally, though research has shown that the flowers possess weak antibiotic activity[268]. The flowers are the main source of the insecticide pyrethrum, which is toxic to insects but not to mammals. It has sometimes been used as a vermifuge in China[147].

Other Uses

The dried flower buds are the source of the insecticide 'Pyrethrum'[1, 4, 14, 18, 46, 57, 61]. The pyrethrins are produced in the yellow disc florets[169]. The highest pyrethrin content is from the flowers when they are in full bloom (1.22%) and lowest in the preceding period (0.71%)[240]. This insecticide also kills many beneficial insects, though it is relatively harmless to mammals[4]. Another report says that it is non-toxic to mammals[238]. It is best used in the evening so that it will have lost much of its virulence by the morning[201]. Steep two handfuls of the dried powdered flowers in one litre of hot water for an hour. This mixture can be either pureed or strained and then used as a spray[201]. Once dried, the flowers or the powder retain their insecticidal properties almost indefinitely[238]. The growing plant can be used as an insect repellent in the garden[14, 18, 20]. Effective against mosquitoes and ants[201].

Cultivation details

Succeeds in an ordinary garden soil[1]. Prefers a rich soil with plenty of humus[147]. Prefers a pebbly, calcareous dry soil in a sunny position[4]. When grown in moist climates the plants often die after flowering[4].Tolerates a pH in the range 5.2 to 7.5. Pyrethrum is widely cultivated as a source of an insecticide[57, 61], the growing plant is also said to repel insects from plants growing nearby[14, 18, 20].

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Propagation

Seed - sow spring in a greenhouse. Only just cover the seed and do not allow the pot to dry out. Prick out the seedlings into individual pots once they are large enough to handle and grow them on in the greenhouse for their first winter. Plant out in late spring or early summer. Division in spring. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the summer or the following spring.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

 

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Expert comment

Author

(Trevir.)Sch.Bip.

Botanical References

50200

Links / References

For a list of references used on this page please go here

Readers comment

Hermann Schultka   Fri Sep 21 2007

Die Ausführungen zur Pyrethrumpflanze sind sehr gut. Meine Frage,wo kann ich einige Jungpflanzen für Lehrzwecke beziehen? Hermann Schultka Gartenbaulehrer

Cottbus

ray congdon   Sun Jan 17 2010

dear sir my daughter is wondering if these plants would be harmfull to her chooks in any form (living plant or dried flowers )

david   Sun Jan 17 2010

I don't know anything about this but a quick search found the following website from the University of British Columia: www.ableweb.org/volumes/vol-10/9-taylor.pdf which says they are harmless to man & animals.The site does mention other plants toxic to poultry. But see note on allergies in humans above.

   May 17 2013 12:00AM

range needs to be corrected-there is no such thing as Yugoslavia, and Dalmatia is actually part of Croatia

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