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Olearia x haastii - Hook.f.

Common Name
Family Asteraceae or Compositae
USDA hardiness 7-10
Known Hazards None known
Habitats A naturally occurring hybrid, O. avicenniifolia x O. moschata[11].
Range New Zealand.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Frost Hardy Moist Soil Full sun
Olearia x haastii


Olearia x haastii

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Summary


Physical Characteristics

 icon of manicon of shrub
Olearia x haastii is an evergreen Shrub growing to 2.5 m (8ft) by 2.5 m (8ft).
It is hardy to zone (UK) 8. It is in leaf 12-Jan It is in flower from Jul to August, and the seeds ripen from Aug to September. The species is hermaphrodite (has both male and female organs) and are pollinated by Insects. 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 moist soil. The plant can tolerate maritime exposure.
It can tolerate atmospheric pollution.

Synonyms

Habitats

 Hedge;

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.



None known

Other Uses

Hedge;  Hedge.

Very resistant to maritime exposure and tolerant of severe pruning, this plant can be used as an effective windbreak hedge in exposed maritime areas. It makes a good dwarf hedge that rarely exceeds 2 metres in height[75].

Cultivation details

Succeeds in any well-drained moderately fertile soil in full sun[182, 200]. Thrives in a chalky soil[182] but prefers a light loam or peaty soil[11]. Very tolerant of maritime exposure[75, 200] and atmospheric pollution[182, 200]. A very ornamental plant[1], it is hardy to about -15°c[184], succeeding outdoors at Kew but liable to be cut back to the ground in severe winters[11]. It is perfectly hardy, however, in the mild maritime areas of Britain[200]. Plants flower best in years that follow long hot summers[200]. Can be pruned right back into old wood in order to promote fresh growth[200]. Any pruning is best done in the spring[11]. It is best to trim new growth of young plants by 50% each year for the first three years after planting in order to promote basal shoots[29].

Propagation

Seed - surface sow in early spring in a greenhouse. Do not allow the compost to dry out. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for their first winter. If growth has been sufficiently good, plant them out into their permanent positions in early summer of the following year, otherwise grow them on for another year in pots and plant them out the following early summer. This species is a hybrid and so will not breed true from seed. Cuttings of half-ripe wood, 5 - 10cm with a heel, July/August in a frame. Pot up in late August and overwinter in a cold frame then plant out in late spring or early summer[78]. Good percentage[11]. Cuttings of moderately ripe wood of the current years growth, 5 - 10cm with a heel, November in a frame. High percentage[78].

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

Hook.f.

Botanical References

11200

Links / References

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Subject : Olearia x haastii  
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