Page 190 - Tài liệu cây cảnh Bonsai4me Bonsai Basics

followed by new extending shoots through the Summer until early Autumn.

The foliage mass can be repeatedly pinched out or scissor-trimmed to shape
throughout the growing season. However, after repeated pruning the foliage
mass becomes very dense and can block air and light from getting to the lower
and interior branches causing them to weaken and potentially dieback. It is
therefore important to thin out the foliage mass periodically (once or twice a
year) to ensure even distribution of air and light to the foliage as a whole.
Propagation Junipers are easily propagated using several methods. To obtain
thick trunks, airlayer branches from mature ground-growing specimens from
May to the end of June when the new buds start to extend. Junipers are one of
the easiest conifers to airlayer and having rooted, can often be separated from the
parent tree by Autumn.
Cuttings can be taken from April to September and will root from 'heel'
cuttings. Use one year old shoots (shoots that appeared in the previous year) and
pull away the shoot from the tree leaving a 'heel' of old wood at its base. Once
potted up, cuttings can exist for up to 2 years on their own sap without rooting;
however new extending foliage and shoots from the cuttings will be indicative of

the cutting having new roots.
Pests and diseases Relatively disease free though scale can be a problem.
Poor draining water retentive composts regularly cause root rot
Styling All forms except broom in all sizes.

Ligustrum/ Privet Bonsai

Ligustrum is a genus of about 50 species of deciduous, semi-evergreen, or
evergreen shrubs and trees found in woodland and thickets in Europe, north
Africa, the Himalayas, Asia and Australia. They bear opposite, variably shaped,
often glossy leaves. In summer they carry panicles of small, unpleasantly
scented white flowers followed by small round fruit. Many species of Ligustrum
are used for hedging and this can provide an excellent source of material for
bonsai. Ligustrum make good material for beginners as they are very forgiving
and virtually indestructible.
There are many species of Privet that have good potential for bonsai but it is
the following three species that are commonly used; (there are also many

varieties of the following species available at nurseries and garden centres which
carry differing coloured leaves; try to avoid using variegated leaves as these
rarely look good when styled as bonsai)
Ligustrum ovalfolium/Oval Leaf Privet