Juniper bonsai care
Juniperus Bonsai: Easy care, Extremely hardy ✅ Well suited for deadwood design ✅ Care and design instructions ✅
Juniper Bonsai care
Juniper Bonsai are characterized by a great hardiness and longevity. This bonsai tree species well suited for dead wood designs and look very nice with their fine needle pads. Juniper bonsai grow slowly. As a result, the maintenance effort is low.
Especially the Chinese juniper varieties Shimpaku and Itoigawa are often cared for as bonsai and are often offered in the bonsai trade.
In the growing season from April to September every 14 days with mineral or organic Bonsai fertilizer. After that fertilization is significantly reduced. Finished juniper bonsai should not be given too much nitrogen. The Chinese juniper responds to much nitrogen with the formation of prickly needles instead of dandruff foliage.
Juniper bonsai tolerates brief dryness well, but should be watered well. It is essential to avoid waterlogging. A slight drying of the earth between watering seems to be beneficial. Short drying is tolerated. Keep moderately moist in winter. It is important that the substrate is well permeable to water and air otherwise it will cause root damage.
With sufficient hydration a sunny summer location is very conducive to the healthy development of a juniper bonsai. Juniperus chinensis tolerates heat well, likes high temperatures and occasional air dryness is tolerated by the China juniper. Partial shade around lunchtime is well tolerated. However, the Chinese juniper bonsai location should not be too shady, otherwise individual branches will become long. In the sun a juniperus bonsai grows much more compact, the needle color is in the partial shade but darker.
Juniper bonsai are hardy and tolerate cold very well. Below -10°C juniper should be placed a little sheltered - protected from dehydration when the root ball is frozen. Young plants need protection against strong and constant winds. In winter quarters the juniper bonsai location must be bright.
In the cold season, the needles are usually brownish to redbrown. Probably a protection of the bonsai from the sunlight in the frozen state. This discoloration quickly recedes in the spring with increasing temperature and day length.
Older juniper bonsai need to be repotted only every 4-6 years, depending on the growth rate and pot size. Younger specimens are usually repotted every 2-3 years. The best time to repot is the late spring. Repotting in September is possible, but spring is preferable.
It should not be used too flat pots, because juniper bonsai need sufficient substrate. Use a well water- and air-permeable substrate (eg Akadama, better is Kiryu). Fine, damp soils provoke root damage in winter. Chinese Juniper Bonsai do not like sour soils. From time to time, the pH should be checked. If the soil reacts acidly, lime can be added.
We have not been able to detect infestation of our juniper bonsai with pests in many years. Also, diseases almost never occurred. Only the infestation with pear rust (also European pear rust, pear trellis rust) is of importance. The European pear rust can colonize juniper permanently and leads to juniper bonsai to nodular thickening on the branches. An infestation with pear rust can best be seen in the spring. Then some parts of the branches are covered with orange, soft, gelatinous outgrowths. Especially on wet days. For bonsai design mainly juniper varieties are taken, which are hardly susceptible to the pear rust.
China junipers can be designed throughout the year. If drastic deformations are to be carried out, the late spring is a good time. The juniper can better cope with the resulting damage in summer.
Juniper prebonsai, Japan imports 2015. This raw material can quickly make a good juniper bonsai.
Juniper bonsai of various species (especially Juniperus chinensis, Juniperus rigida, Juniperus communis) are very commonly used for bonsai design. Jin and Shari underline the age of a juniper bonsai. Juniper tolerate extremely well such deadwood designs. Even large-scale debarking is possible. Juniper can survive well even if only small pathways of living bark connect the roots with the branches. Most varieties used for the bonsai design are with only flaky or needle-only leaves.
Juniper bonsai can be wired all year round. At the end of the summer more attention must be paid to the ingrowth of the wire. The wire usually has to stay on the tree for 1-2 years otherwise the shoots will bend back to their original position.
The new shoot must be plucked regularly to get a compact shape. In doing so, the shoots to be plucked are held between the thumb and the forefinger, and with the other hand the outermost tips are removed. If a Juniperus bonsai with dandruff foliage reduced too much in one step, it forms more needle-like foliage. Slow shaping over long periods is highly recommended. Spiny leaves in the fine scales of a Chinese Juniper Bonsai are usually disturbing. It slowly forms, but often stays for years.
Juniperus species can be designed in almost all styles. Many juniper bonsai are free upright (Moyogi style).
Chinese juniperus (Juniperus chinensis)
Chinese juniper bonsai (Juniperus chinensis), especially the variety Shimpaku, are popular. Chinese juniperus bonsai are extremely hardy, grow slowly (with little care), form fine needle pads and are particularly suitable for deadwood.
This bonsai tree is native to Japan, China and Korea and forms as a bonsai 2 needle shapes: Prickly juvenile leaves, which later turns into dandruff. Cushions with dandruff foliage look very fine.
With sufficient irrigation a sunny location in summer is very conducive. Partial shade around lunchtime is well tolerated. In the sun a chinese juniper bonsai grows much more compact.
Chinese Juniperus bonsai tolerate cold temperatures very well. Below -10°C this species should be placed a little sheltered. In winter the Chinese juniper bonsai must have a bright location.
When watering, waterlogging should be avoided. Do not fertilize nitrogen rich. The Chinese juniper responds to much nitrogen with the formation of prickly needles instead of the dandruff foliage.
China junipers can be styled throughout the year. The new shoots are usually plucked. If dandruff junipers are reduced too much in one step, needle-like foliage is increasingly formed. This bonsai tree species can be wired all year round.
Older juniper bonsai are repotted every 4-6 years, younger specimens after 2-3 years. The best time to repot is the late spring. Repotting in September is possible, but spring is preferable.
Common juniperus (Juniperus communis)
The common juniper (Juniperus communis) is rarely offered as a bonsai although it is excellent as a bonsai. Juniperus communis Bonsai have only needles (no scales), are extremely hardy, become very old and need little maintenance. The tree needs a lot of light as a bonsai and should stand in the sun.
As a tree, the common juniper is up to 10m high and occurs in the entire northern hemisphere. It grows mainly in extreme locations on often very low nitrogen soils.
Potted in well-drained bonsai substrate (like Kiryu bonsai soil) this juniper grows very well as a bonsai and does not need to be replanted too often. Fertilize a Juniperus bonsai regular, but not too nitrogen-rich. In contrast to chinese juniperus bonsai, the common juniper is only styled in the growing season.
Juniperus bonsai - Pictures
Both in Japan and in China, you can admire many very good Juniper Bonsai. The following pictures are from our shopping tours through China and Japan.
- Juniperus bonsai on a bonsai market in south china
- Juniper Bonsai - Pictures from the Botanical Garden Shanghai
- Juniperus bonsai in different japanese export bonsai nurseries