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How to Grow an Arizona Ash Tree


Arizona ash trees, also known as Fraxinus velutina, are deciduous trees that can grow up to 50 feet tall. They are popular in landscaping due to their attractive foliage and ability to provide shade. If you’re interested in growing an Arizona ash tree, here are some tips for success.

1. Choose the Right Location


Before planting an Arizona ash tree, it’s important to choose the right location. These trees thrive in full sun, so make sure the spot you choose gets plenty of sunlight. The soil should be well-draining, as these trees don’t like to sit in soggy soil. If your soil is heavy clay, consider amending it with compost or sand to improve drainage.


Another thing to consider when choosing a location is the size of the tree at maturity. Arizona ash trees can grow quite large, so make sure you plant them in a spot with enough room for their ultimate size.

2. Plant Correctly


When planting an Arizona ash tree, dig a hole that is two to three times wider than the tree’s root ball. Gently remove the tree from its container and loosen any tangled roots. Place the tree in the hole and backfill the hole halfway with soil. Water the tree thoroughly to help settle the soil around the roots.


Once the water has drained away, finish filling the hole with soil and tamp it down gently. Make sure the tree is straight and level, and use stakes and ties to secure it if needed. Water the tree deeply once a week for the first year to help establish its roots.

3. Provide Adequate Water


Arizona ash trees require regular watering, especially during hot and dry periods. Water deeply once a week during the growing season, and adjust your watering schedule as needed based on rainfall and temperature. Be careful not to overwater, as this can lead to root rot.

4. Fertilize Annually


To keep your Arizona ash tree healthy and thriving, fertilize it annually in the spring. Use a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. Apply the fertilizer evenly around the tree’s drip line, which is the area directly below the outermost branches.

5. Prune As Needed


Regular pruning is important to keep your Arizona ash tree strong and healthy. Remove any dead, diseased or broken branches promptly to prevent further damage. You can also prune to shape the tree or remove any crossing branches. Prune in late winter or early spring before new growth begins.

6. Watch for Pests and Diseases


Like all trees, Arizona ash trees are susceptible to pests and diseases. Watch for signs of insects such as aphids, scales, and borers, as well as fungal diseases like anthracnose and powdery mildew. If you notice any problems, consult with a professional arborist to determine the best course of action.

Arizona Ash Tree in Fall
Arizona Ash Tree in Fall

7. Enjoy Your Tree


Growing an Arizona ash tree can be a rewarding experience. These trees provide shade, attract birds and other wildlife, and add beauty to your landscape. With proper care and maintenance, your Arizona ash tree can thrive for many years to come.

Arizona ash tree, Fraxinus velutina, landscaping, planting, watering, fertilizing, pruning, pests and diseases.

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