Japanese Umbrella Pine Tree (Umbellatum dulcificum)

The Japanese umbrella tree is native to Japan and it grows up to 12 feet tall. They are hardy trees with low maintenance requirements and they produce large quantities of cones. The Japanese umbrella tree produces large numbers of seeds which fall from the branches during the winter months.

These seeds germinate within a few days after falling. The seedlings grow rapidly and may reach heights of 10 feet before they are killed by cold or frost.

How To Prune A Japanese Umbrella Pine Tree?

There are two ways to prune Japanese umbrella pines. One way is to cut off all but one branch at the top of the tree. This method will allow the tree to grow back naturally without any human intervention. The other way is to remove all branches except those that support the trunk. Then, you must leave only one healthy branch above ground level. If you do not have enough space beneath your house, then you can use a trellis system to keep your Japanese umbrella tree standing upright.

What Are Some Problems With Growing Japanese Umbrella Pines?

Most of the problems associated with the Japanese umbrella pine are due to improper maintenance. The most common problem is sunburn, which can cause brown spots on leaves. This happens because the plant gets too much sun and heat. Another common problem is root rot, which is caused by over-watering, poor drainage, or standing water around the tree’s roots.

How Fast Does A Japanese Umbrella Pine Tree Grow?

Most young trees grow at a rate of 1 foot per year. This rate can increase up to 3 feet per year when the trees are young and still growing rapidly. Be aware that the older the tree gets, the slower it grows.

How Do You Prune A Japanese Umbrella Pine?

Pruning a japanese umbrella pine is relatively easy because the trees do not require annual pruning to remove dead wood or thin out dense areas of branches. Most people choose to keep their trees in a number of different sizes, which can be achieved by cutting off large parts of the branches and leaving stubs to grow out again.

What Type Of Soil Is Best For A Japanese Umbrella Tree?

The japanese umbrella pine is adaptable to most types of soil, but the best soil for the tree is well-draining, loamy soil. It is important that the soil does not become soggy or water-logged because these trees cannot tolerate wet roots.

How Big Do Japanese Umbrella Pines Get?

Most Japanese umbrella pines grow to be between 8 and 12 feet tall. Some may grow taller, but they have a tendency to lose their lower branches as they grow taller.

What Color Are The Leaves Of The Japanese Umbrella Tree?

The leaves are a glossy green with a distinctive umbrellashaped crown of branches. The japanese umbrella tree turns a vivid red-orange in the fall before dropping its leaves for winter.

How To Start Japanese Umbrella Seeds?

These seeds can be started either indoors or out. If starting the seeds inside, place 4 to 5 seeds 1/4-1/2 inch deep in a container that has a mixture of sand and peat moss. Keep the container moist but not wet. Once the seeds sprout, select the healthiest seedling and transfer it to your garden once the weather is warm enough or when the seedlings are at least 2 inches tall.

If starting the seeds outside, you can sow the seeds shallowly 1/4 inch deep in early spring. Keep the seed bed moist and lightly covered with mulch to help keep the seeds warm. Once the seedlings sprout, remove the weakest seedlings and thin the others so they are 8-12 inches apart.

How To Take Care Of A Japanese Umbrella Tree?

Once your tree has become established, it is relatively maintenance free. The most important thing you can do is make sure the soil is well-draining. Also, be aware that these trees are very sensitive to chemicals in pesticides and other sprays. If you are going to use chemicals, make sure they are specifically made for evergreens.

How To Care For A Japanese Umbrella Bonsai Tree?

The most important thing to keep in mind when caring for a japanese umbrella bonsai tree is watering. Make sure the soil you plant it in drains well. You should also avoid letting the tree sit in water for long periods of time. This can cause root rot, which will kill your tree.

If you stick to the basics when it comes to watering, your tree should do well. Be aware that these trees do not like a lot of water around their roots so only water the tree when the top few inches of soil becomes dry. Also, try to water the tree early in the day so that it has all day to dry out.

Moisture on the trunk can cause problems with fungus or other diseases.

Article originally published April 16, 2013.

Sources & references used in this article:

Chromosome study of Japanese umbrella pine. by SE Schlarbaum, T Tsuchiya – Journal of Heredity, 1976 – cabdirect.org

Taxonomy and phylogenetic position of Fomitiporia torreyae, a causal agent of trunk rot on Sanbu-sugi, a cultivar of Japanese cedar (Cryptomeria japonica) in Japan by Y Ota, T Hattori, H Nakamura, Y Terashima, SS Lee… – Mycologia, 2014 – Taylor & Francis

The propagation of Sciadopitys verticillata Sieb.+ Zucc by WJ Lowry – 1932 – scholarworks.umass.edu

Soil science and management by E Plaster – 2013 – books.google.com

Habitat management alternatives for conservation forests in the temperate zone: Review, synthesis, and implications by F Götmark – Forest Ecology and Management, 2013 – Elsevier

Japanese Garden Inventory and Management Plan for Maymont Park-Richmond, VA by CE Jones – 2009 – vtechworks.lib.vt.edu

Soil microarthropod communities from Mediterranean forest ecosystems in Central Italy under different disturbances by S Blasi, C Menta, L Balducci, FD Conti, E Petrini… – Environmental …, 2013 – Springer

Risk assessment of Gibberella circinata for the EU territory and identification and evaluation of risk management options by EFSA Panel on Plant Health (PLH) – Efsa Journal, 2010 – Wiley Online Library

Landscape trees and shrubs: selection, use and management by M Forrest – 2006 – books.google.com

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