Hardy Ornamental Flowering Trees and Shrubs · Chapter 219Veronica
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VERONICA PINQUIFOLIA.—New Zealand, 1870. This is one of the hardiest species, but it is of low growth, and only suitable for alpine gardening. It is a dwarf spreading shrub, with intensely glaucous leaves and white flowers.
V. TRAVERSII.—New Zealand, 1873. This may be considered as one of the few species of hardy Veronicas. It grows about 4 feet high, with deep green leaves arranged in rows, and white flowers, produced late in summer. It is a very free-growing shrub, of perfect hardihood, and one of, if not the best for general planting.
The above two species are, so far as is at present known, the hardiest in cultivation, although there are many kinds that will succeed well under very favourable conditions, and particularly when planted by the sea-side. Other half-hardy species might include V. salicifolia (Willow-leaved Veronica), with long, narrow leaves, and white or purplish flowers; V. ligustrifolia (Privet-leaved Veronica), with spikes of feathery-white flowers; V. speciosa, with erect spikes of purplish-blue flowers; and V. Andersoni, a hybrid form, with spikes of bluish-violet flowers.
The dwarf or alpine species might include V. cupressoides, with Cypress-like foliage, V. Lyallii, V. carnosula, and others, but such hardly come within our scope.