Olearia x haastii
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Olearia x haastii is an evergreen shrub that can grow up to 2.50 metres tall.
The plant is sometimes grown as an ornamental, where it can be used to make a hedge
A naturally occurring hybrid, O. avicenniifolia x O. moschata[
Succeeds in any well-drained moderately fertile soil in full sun[
]. Thrives in a chalky soil[
] but prefers a light loam or peaty soil[
]. Very tolerant of maritime exposure[
] and atmospheric pollution[
A very ornamental plant[
], it is hardy to about -15°c[
], succeeding outdoors at Kew but liable to be cut back to the ground in severe winters[
]. It is perfectly hardy, however, in the mild maritime areas of Britain[
Plants flower best in years that follow long hot summers[
Can be pruned right back into old wood in order to promote fresh growth[
]. Any pruning is best done in the spring[
]. 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[
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[
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, mid summer in a frame. Pot up in late August and overwinter in a cold frame then plant out in late spring or early summer[
]. Good percentage[
Cuttings of moderately ripe wood of the current years growth, 5 - 10cm with a heel, late autumn in a frame. High percentage[