When you buy a bare root red maple tree to plant in your yard, it'll usually look more like a skinny stick than a towering shade tree. While it'll take time for it to reach maturity, it won't stay a leafless stick forever! Some trees are slow growers years to reach full size and some are fast years.
The good news is that red maples grow at medium speed; in the tree world, this equals about inches of height a year. It still will provide plenty of beautiful color and cooling shade throughout these years as it matures.
Coral spot , Phytopthora root rot and verticillium wilt can also be a problem. National Collection of acers. Join the RHS today and get 12 months for the price of 9. Take action Why take action? Support us Donate Careers Commercial opportunities Leave a legacy. Join the RHS today and support our charitable work Join now. Hot links Browse inspiration articles Buy plants online. Buy tickets. RHS members get reduced ticket prices Join now.
Harlow Carr North Yorkshire. Hyde Hall Essex. Rosemoor Devon. Wisley Surrey. Bridgewater Greater Manchester. Environmentally friendly gardening. Plant health. Take part in our research. Meet the team. Japanese Maple tolerate heavy clays, loose sands, and everything in between, but they do not like salt soils.
Salt spray is another matter; they have quite a good tolerance for that! If your soil is high in salt, consider growing your Maple in a container. Japanese Maple are greedy feeders, especially when young. Before planting, work as much compost as you like into the soil around the tree, and keep adding it during spring and early summer. Composted matter not only adds valuable nutrients to the soil, it tends to retain moisture, which Japanese Maple love. These trees are quite drought-tolerant when mature, but like most young trees, they need regular deep waterings during the first few years.
Plan to water heavily twice a week during normal weather and three or even four times weekly in periods of drought. Whether your tree is young or mature, it will grow best in soil kept consistently moist by regular watering and mulching. A 3-inch layer of shredded bark around the entire root zone of the tree but not touching the trunk works well in all seasons. To encourage the most spectacular color show in fall, reduce the amount of water you give your Maple in late summer and early autumn.
Of course, do not let it dry out completely, but cut back so that it stops producing more green leaves and begins its fabulous color changes. You will be amazed at the difference this makes! It leafs out early — the first hint of warm weather will cause it to break dormancy.
In many climates, there are several frosts in store after that initial warm period, and these can be dangerous, especially to young trees. Keep the tree covered when the forecast calls for frost. Ideally, you should plant at least a month before the ground freezes, so it has time for some root growth before winter. But if you find yourself planting late, don't worry. This will allow oxygen to reach the roots in the upper surface of soil.
Do not disturb the soil under the root ball to prevent any later settling, which will move the plant roots deeper into the soil. In well-drained soil, the planting hole should never be dug any deeper than the height of the root ball, the planting hole should be at least twice and preferably five times wider than the root ball. Mulch should be placed over the surface. Planting in containers is a great way to start your maple tree.
However, from years of growing maples in containers I have come to learn that Japanese maples prefer to be somewhat snug in a container.
If too much soil is allowed to sit around the rootball there is a greater chance of the soil becoming too saturated with water which can lead to root rot. This seems to be particularly true for smaller maples in containers.
So it is best not to use a container that is too big for your tree. As a general rule use a container no larger than twice the diameter of the rootball and half again as deep. Another way to look at this is not to go more than double the volume of the rootball.
As the plant becomes larger, planting in wine barrels or other large containers is a great way to use the maple as an accent on your patio, front porch or backyard. A mixture of half potting soil and half aged bark is an ideal medium for containers.
Vermiculite or perlite can be substituted for the bark. After two or three years in a container, your tree will benefit from root pruning and some fresh soil. The outer layer of roots can be pruned or cut off with a saw or sharp knife. Only the root tips take up water and nutrients. If you are returning the plant to the same pot, remove enough root ends so you can incorporate some soil around the perimeter.
There is no need to disturb the center of the root ball. Japanese Maple Tree Varieties. Easy to Grow Japanese Maples. Beni ubi gohan. Emerald Lace.
Full Moon Maple. Green Hornet. Katsura Hime. Koto no ito. Lima Gold. Kuro hime. Mendocino Momiji. Mikawa yatsubusa. Olsens Frosted Strawberry. Red Dragon. Red Pygmy. Sharps Pygmy.
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