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Planting and Maintenance for the California White Alder Tree

White Alder Tree
Your home is an investment, so you may be wondering how to improve the value of your home. Fortunately, landscape design is one of the easiest ways to improve curb appeal while increasing the overall value of your house. Of course, many homeowners are unsure where to start. With the implementation of a few trees, you can add shade, beauty, and value to your landscape.

The white alder is an excellent tree to consider for your landscaping needs in California.
Not only does it thrive in dry and coastal climates, but it is also capable of withstanding floods and severe drought. To add texture, beauty, and value to your home with one or more white alder trees, use this guide and your tree professional's help.


Growing a white alder tree is fairly simple, but the location of your tree does matter. The tree is capable of growing up to 80 feet tall, so choose an area of your yard that is away from the home's exterior, power lines, and other outdoor structures.

The spread of the white alder tree is also large. If you are planting multiple trees around your yard, make sure to leave several feet of space between each tree.

Dig a hole a few times the size of your tree's root ball. Use your hands to gently massage the root ball. This will loosen up the dirt, helping the roots establish themselves into the soil.

Place the tree into the hole and surround with nutrient-rich soil. Surround the base of your tree with mulch and then water thoroughly.


Continue watering your tree daily after planting. Since the white alder is both flood and drought resistant, it can withstand periods of excess moisture and dryness. However, watering is essential for helping the roots implement into the ground.

You may be surprised to learn that the white alder tree does not require seasonal fertilizing, but fertilizing can still improve the success and speed of growth.

After planting, apply a liquid fertilizer to the tree while watering. Use this fertilizer in the spring and fall seasons during the first two years of planting. Once the tree is established, it will not require seasonal fertilizing.

As your tree grows, pruning will keep its shape attractive.

Sharp pruning shears should be used to trim away dead, decaying, and dying limbs and branches. Prune back any branches that intercept one another, as well. This will reduce the stress on your tree, improving its general health and look.

Next, focus on the trunk of your white alder. If you notice any small shoots growing off the trunk, prune them from the tree.

If you are unsure about the proper techniques used in pruning, consider hiring specialists who have the experience and knowledge needed to maintain your trees.

Pest Control

The white alder is a strong and durable tree, but you must protect it from certain pests.

The flat-headed borer is one of the most common pests that can affect your white alder tree. These beetles infiltrate the tree, feeding off the foliage and making the branches their home.

If foliage is discolored and you notice holes in the branches and limbs, the tree is most likely infested with these pests.

Applying a pesticide to the tree is imperative for stopping the infestation. In addition, pruning away affected foliage, branches, and limbs will be necessary to promote healthier growth once the flat-headed borers have been removed.

Once you have planted your tree, proper care and maintenance will be necessary to protect your landscaping investment. For more information on the white alder or help maintaining other trees in your landscape design, contact the Anderson Tree Company.