Ageratina ligustrina
Famille: Compositae, Genre: Ageratina
Arbuste à feuilles persistantes (5m de haut).
Habitat
- Exposition
- Plein soleil
- Humidité
- Humidité moyenne.
- Sol
- Tous sols. Nécessite un sol drainant.
- pH
- Sol acide ou calcaire
- Rusticité
- Zone 10
- Habitat originel
- Inconnu
- Origine géographique
- Southern N. America - Mexico to Costa Rica.
Culture
- Requires a sunny position, succeeding in most well-drained but moisture retentive fertile soils [1].
- A very ornamental plant, it is often grown as an ornamental in the greenhouse but can succeed outdoors in the mildest areas of the country [1, 11, 59].
- Plants have withstood temperatures down to -12°c [11].
- Another report says that plants are often cut back by frost [166].
- Plants are usually grown under one of its synonyms [11].
- The flowers are very attractive to butterflies [49].
- Plants can continue flowering until Christmas in mild autumns [182].
Propagation
- Seed - sow spring in a cold frame, only just covering the seed .
- When large enough to handle, prick the seedlings out into individual pots and grow them on for at least their first winter in a greenhouse .
- If planting them outdoors, do this in late spring or early summer, after the last expected frosts, and consider giving the plants some protection from the cold for at least their first winter outdoors .
- Cuttings of green wood, spring in a frame .
Calendrier
- En fleur
- 9 - 11
- En feuille
- 1 - 12
Pollinisation
- Type de fleur
- Hermaphrodite (les fleurs ont des organes mâles et femelles)
- Auto-fertile
- Oui
- Pollinisateurs
- Abeilles, lépidoptères
Divers
- Pollution
- Non
- Autres réferences
- [11, 200]
Réferences
[1] RHS Dictionary of Plants plus Supplement. 1956 1951.
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[11] Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. 1981.
A classic with a wealth of information on the plants, but poor on pictures.
A classic with a wealth of information on the plants, but poor on pictures.
[49] Shrubs for the Milder Counties.
Trees and shrubs that grow well in Cornwall and other mild areas of Britain. Fairly good, a standard reference book.
Trees and shrubs that grow well in Cornwall and other mild areas of Britain. Fairly good, a standard reference book.
[59] Trees and Shrubs in Cornwall.
Trees and shrubs that succeed in Cornwall based on the authors own observations. Good but rather dated.
Trees and shrubs that succeed in Cornwall based on the authors own observations. Good but rather dated.
[166] The Milder Garden. 1990.
A good book on plants that you didn't know could be grown outdoors in Britain.
A good book on plants that you didn't know could be grown outdoors in Britain.
[182] Ornamental Shrubs, Climbers and Bamboos. 1992.
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
[200] The New RHS Dictionary of Gardening. 1992. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
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