Page 205 - Ebook cây cảnh Art of Bonsai

Plant care directory 205

Transplanting/Soil Best transplanted in fall; specimens where maintaining the look Cornus officinalis Japanese cornelian
see notes above. Use a moisture-retentive, is the goal. cherry This has clusters of yellow flowers in
akadama-rich soil mix to help develop its Pests/Diseases Spider mites can be an issue. late winter and spring followed by red berries.
extensive fine roots. Pruning/Styling Foliage management is the
Pests/Diseases Aphids on fresh tender key point. Wire and style the main branches
growth, and crown gall can be a problem. It but do not over wire the foliage. They are Corylopsis
will drop leaves if strong chemicals are used. generally upright trees since this is their WINTER HAZEL
Pruning/Styling Generally, clump styles are natural growth habit. This winter flowering deciduous tree is grown
used, except for ‘Chojubai’, which are often Propagation Cuttings, seed. mainly for the flowers. It is mostly seen as
seen as in single-trunk cascade, windswept, or clump styles although single trunk trees are
slanting styles. Allow the shoots to extend, Chamaecyparis obtusa Hinoki also possible. Many branches are desirable in
and pinch off tips before allowing the growth cypress This is most commonly used and order to appreciate the flowers. It is an acid-
to harden off; then prune back into shape. found across Japan. Several dwarf cultivars loving plant, so use an acidic fertilizer if the
Propagation Cuttings are very successful. exist. They have bluish green on the underside leaves turn yellow. Cultivate as for Cornus.
of their foliage.
Chaenomeles japonica ‘Chojubai’ This
is most common in the shohin world, and is Chamaecyparis pisifera Sawara Cotoneaster
a very versatile and popular small-leaf cypress ‘Boulevard’ and ‘Plumosa’ cultivars COTONEASTER
variety with delicate red flowers. It are easily available. They have a white This is very versatile and a suitable shrub for
flowers throughout fall, winter, and spring. underside to their foliage. bonsai, with more than 200 different
Defoliation to promote ramification is varieties, both evergreen and deciduous. It is
possible, but it will weaken the tree. There a good beginner tree since it is forgiving and
are several varieties in the bonsai world; Cornus can be easily clipped into shape. With careful
some ramify well but flower poorly, while DOGWOOD cultivation, great results can be achieved,
others flower profusely and ramify poorly. This flowering deciduous tree is occasionally especially with shohin-sized trees. Small
used for its interesting flowers. It is difficult foliage, flowers, and fruit are the main
Chaenomeles speciosa Flowering to ramify and create into a maplelike tree, character points. Material can be obtained
quince A number of cultivars exist of this and the branches tend toward the coarse or from gardens and cut back dramatically,
deciduous flowering shrub; ‘Toyo-nishiki’ is lack taper, although the seasonal interest is since they bud from old wood.
a multicolored variety popular in Japan. worth persevering for. Hardiness/Location Hardy, zones 4–9, but
Generally, the clump style is used. This has Hardiness/Location Frost hardy, zones 5–9, remember to provide additional protection
a larger oval leaf. but protect delicate branching from frost when grown in pots. Give full sun but protect
damage. Provide full sun unless periods of the fruit from birds when it has set.
extreme heat occur. Watering Cotoneaster is drought tolerant but
Chamaecyparis
Watering Do not allow it to dry out through will thrive if watered regularly. Do not allow it
CYPRESS, FALSE CYPRESS the growing season, and keep it moist but to dry out when flowering or setting fruit.
This fairly common coniferous tree is often not wet in winter. Fertilizing Apply lightly throughout the
seen as bonsai, although it can be difficult Fertilizing Heavily after flowering, stop during growing season except during flowering. It
to maintain the foliage pads. Garden center flowering, and then lightly throughout the rest does not respond to heavy fertilizing.
material is often used, but be sure that the of the growing season. Transplanting/Soil Every two to three years
root system is suitable for a bonsai pot. Transplanting/Soil Every two to three years for younger specimens; longer for mature
Foliage management is key, since adventitious for younger trees, but longer for mature trees where maintaining the shape is the goal.
budding is very rare. Scale foliage grows out specimens, where maintaining the look is Pests/Diseases Generally pest free.
in fans, and needs to be restricted carefully. the goal. Pruning/Styling Wire the main branches and
Prune out the strongest growing tip only if the Pests/Diseases Generally pest free. the larger secondary ones. Prune to shape the
foliage behind it has light green growing tips Pruning/Styling Use deciduous styles, and foliage pads. Allow spring extensions and then
as well. If all growing tips are removed, the treat in a similar way to maple, but do not cut back to shape. Defoliation will increase
branches will die. When styling, spread the defoliate. The best way to achieve more ramification but only once the leaves have
foliage out and give it space to grow into. flowers is to encourage more branches. hardened off and if there is enough time left
Internal branches will yellow and die from Propagation Cuttings, layering, seed. in the season to grow and harden off again
lack of sunlight. before any frost. Any style is possible but
Hardiness/Location Hardy, zones 4–9. Cornus kousa Kousa dogwood Lots they are often seen as cascade or windswept
It is cold tolerant but protect the pot from of white flowers in early summer, turning to due to their natural growth habit.
hard frost or extended freezing. Keep it large red fruit and large leaves that turn Propagation Take cuttings, or sow seed.
sheltered from cold, drying winds. deep orange and red in fall. Very strong
Give it full sun in summer. and pest resistant. Cotoneaster adpressus This deciduous
Watering Unlike other conifers, it is not variety has pink flowers in spring, red berries,
drought tolerant. Do not allow it to dry out; Cornus mas European cherry, and then fall foliage that drops.
it is a thirsty tree. cornelian cherry This is found across
Fertilizing Throughout the growing season. Southern Europe. It flowers in late winter and Cotoneaster horizontalis Rockspray
Transplanting/Soil Every two to three years spring with small yellow flowers followed by cotoneaster The flowers can be pink/white
for younger trees, but longer for mature red cherrylike fruit. followed by red berries. It is also deciduous.