Healthy Juniper Bonsai Roots
When severe root pruning is required to get a nursery plant into a bonsai pot do not remove more than two thirds of the roots of a container plant if root pruning during the dormant season.
Healthy juniper bonsai roots. These smaller roots are much more efficient at absorbing water the immediate necessary factor following root pruning. Be careful not to water too much as the juniper roots don t like soil wetness. Always remove damaged dying or dead roots from the system cutting back at least one third of the way past the damaged area. Cut away no more than one third of the root system.
You can use a commercially prepared mix labeled for bonsai or you can make your own. Severe root pruning should only be done during dormancy. Prune only healthy juniper trees. Remove larger roots over smaller fibrous ones to promote a very miniature size.
For a detailed description of root pruning read this article by bonsai grower brent walston. Analyze the stem structure of the juniper. Root pruning also keeps your bonsai healthy. Gently comb out the root system.
A suitable potting mix includes equal parts of humus or ground pine bark sand or perlite and clay. Before you water the soil should dry slightly. Prune off larger unwanted branches. The roots should be trimmed all around so that the root ball will fit into its new container without having to fold or tuck long.
You can repot juniper any time during its growing season but withhold fertilizer for 30 to 60 days afterward. How often depends on the variety of plant the size of the pot and your climate. Before you water the soil should dry slightly. Misting the tree can be done regularly especially after the tree has been repotted because it benefits from air humidity.
For junipers the best time of year in most climates is fall or early spring. Sterilize small sharp clean pruning shears by.