As you consider adding a new tree to your lawn, you might think that spring is the best time to plant it. After all, trees grow new leaves and flowers start to bloom during this season.
Although it might seem counterintuitive, the fall is usually prime planting time in Colorado. So if you want to add a tree to your yard, the best time to think about it is now-by April or May, you’ll have missed your window.
In our blog below, we’ll give you a few more specifics about when to plant certain trees in Colorado, how to plant them, and how your arborist can help you care for them. With a little professional help, your newly planted tree will thrive for years to come.
1. Learn About Your Plant Hardiness Zone
The time of year you need to plant your trees depends on your region’s plant hardiness zone. The USDA calculates your area’s zone depending on its average yearly temperatures. Depending on where you live in Colorado, your area’s plant hardiness zones will probably fall between categories 4b and 6a. If you live in these zones, you should usually plant trees in the fall, though the month may vary by region.
Your arborist can give you specific advice about your region’s plant zone so you can decide when to plant your trees. Most arborists will advise you to plant deciduous trees when they’re dormant (in the fall or winter) to minimize disrupting the trees’ growth.
If you want to plant evergreen trees, you can wait until later in the season than you can for deciduous trees. But if you wait until too late in the winter to plant, the ground might be frozen hard enough that you won’t be able to dig into the ground.
2. Decide Which Type of Tree You Want to Plant
The type of tree you choose to add to your yard can determine how it thrives. Some trees are simply better equipped to outlast Colorado’s long winters, bright sunlight, and thin air. Again, your arborist can advise you on the trees that are most likely to thrive in your hardiness zone and climate.
Remember to take multiple factors under consideration as you choose your tree. Ask yourself why you want to plant the tree in the first place-do you want a sound barrier between your home and the road? Do you want increased privacy and shade? Do you want to contribute to a habitat for native birds or grow delicious fruit?
Or do you want to cultivate a beautiful tree that adds to your yard’s aesthetic and value?
Your answers to these questions can help you decide which type of tree you want to plant.
Finally, decide whether you want to plant a native tree or an imported one. In general, native trees do better in Colorado’s soil and altitude than imports. They also create better habitats for native birds and other animals. If you prefer to grow a non-native tree, talk to your arborist to learn strategies to help your plant grow successfully in Colorado.
3. Consider Growth
Remember that although your tree seems small now, it will likely grow much larger if you nurture it correctly and protect it from pests. Before you plant your tree, examine the spot you’ve chosen. Are there any overhead power lines? How closely does the tree sit to your house? Could your tree’s roots eventually reach the sidewalk, causing cracks and other damage?
You should always contact your utility provider before you start digging-you don’t want to accidentally hit and rupture a pipe while you work. You also want to plant your trees away from sewage and other lines, since strong roots can actually crack and destroy these structures.
If you’re planting a shade tree, take direction into account. Plant shade trees on your home’s east, west, and south sides for summer shade. Plant evergreens near your home’s north and west sides to guard against winter wind and chill.
If you’re not sure how large your tree will grow, talk to your arborist. Your landscaper can also help you decide where to best position your tree for aesthetic value.
4. Continue to Water
Once you decide on the right tree and assess its placement, you can dig a hole and plant your tree. But even though it’s fall or early winter, your work can’t end yet. Remember to water your tree throughout the fall season to ensure it survives until the summer.
You should even water your tree during the winter, after you turn off your sprinkler system. Even if it snows, the moisture from the snow won’t reach the tree until warm weather causes the snow to thaw. Water your trees once or twice per month from the start of October to the end of March. Water on warmer winter days, if possible-frozen ground will block the water’s progress to the roots.
When you follow these steps, your tree will reach spring with strong roots and a solid start. To learn more about how to care for new trees, don’t hesitate to contact your arborist. And for more tips on caring for your trees year round, check our blog frequently.
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