The Caryopteris clandonensis is a small deciduous shrub native to Central Asia. It has an erect, generally roundish habit and reaches a height of one metre; the leaves are small, oval or lance-shaped, grey-green in colour, slightly pubescent on the underside, and give off a delicate aroma if rubbed with the hands. From the second half of August until the cold autumn, it produces numerous apical and axillary inflorescences made up of small blue-lavender flowers.
In places with very cold winter temperatures, the plant tends to dry out the aerial part in late autumn. There are numerous hybrids, with white flowers or with golden or variegated white leaves. It is advisable to remove the wilted flowers to facilitate a longer flowering.
The Caryopteris clandonensis should be grown in a very sunny place, or in a partial shade; in general it doesn’t fear the cold weather, although it is always advisable to mulch the base of the plant in the autumn. It is possible to perform the operation throughout the year without any risk to the shrub.
It tolerates well the cold, in the phase of winter rest, even up to -10°C -15°C, then it is better to use a protection. It has no problem resisting intense heat and salty winds.
As flowers bloom on new branches, there is often a tendency to cut the plant down to the ground in the autumn or early spring to encourage the development of vigorous branches.
The genus Caryopteris brings together some species of shrubs of Asian origin, the species most widely grown in the garden is actually a spontaneous hybrid, which originated in Europe in a garden. The Chionanthus virginianus is a shrub, or small tree, with deciduous leaves, native to North America, which can reach 6-7 meters high. The trunk is erect, often light, and has a very…
The Garrya elliptica is a shrub native to North America and in adulthood reaches 4-5 meters high. It has a dark brown trunk, with slightly fissured bark, the trunk has a dark brown colour and a… The cycas revoluta is an evergreen plant suitable for the garden or apartment, native to Asia, it is one of the oldest plants on earth, was once spread throughout the world….
This type of plant can withstand short periods of drought without any problems.
In the vegetative period, from March to November, it is useful and recommended to water sporadically, increasing the frequency of watering in dry periods, in the spring spread at the base of the plant of slow release granular fertilizer for flowering plants.
Of course, for plants grown in pots, it will be necessary to increase the frequency of watering to allow the proper development of the plant as the needs are different, not being able to count on the natural moisture present in the ground.
These small ornamental shrubs prefer loose and very well drained soils and are often used in rock gardens, where the rocks also provide shelter from the summer heat and winter rains. They can also adapt to different soils, of course the development will be less.
The multiplication of the Caryopteris clandonensis generally takes place by seed. This plant is sown in a seedbed, in a protected and temperate place in the period that coincides with the end of winter, in February-March and the seedlings will germinate in 10-15 days. The new plants are to be cultivated in containers until April-May, when they can be planted, after they have acquired the necessary strength to resist the transplant. In this way, they can easily take root.
Caryopteris clandonensis: Pests and diseases
Being a rather rustic and resistant plant this variety is not easily attacked by pests and diseases, however, like many other types of shrubs, the Caryopteris clandonensis fears radical rot, particularly favored by very wet winters or by an excessive dose of water provided through too much watering.