Why Autumn is the Best Time to Plant

Planning a landscape improvement? Make autumn your planting season.

Gardening in Tahoe can be quite different from other, milder areas. Our high-elevation climate, short growing season, cold winters, intense summer sun, and unique mountain soils all play a role in determining what—and when—you should plant.

While spring may seem like the obvious time to start a landscape project, autumn is actually one of the best seasons to put new trees, shrubs, and perennials in the ground. In the Lake Tahoe Basin, fall planting gives many plants an opportunity to establish their roots before the demands of the following summer arrive.

Here are some great reasons to get started on improving your landscape this fall.

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Cooler Temperatures Mean Less Stress

Summer in South Lake Tahoe can be beautiful, but it can also be challenging for newly planted vegetation. Warm temperatures, dry air, intense sunlight, and increased evaporation can put significant stress on plants that are trying to establish new roots.
By autumn, temperatures begin to cool and the sun becomes less intense. This creates a much gentler environment for newly planted trees, shrubs, and perennials.

Plants don’t have to work as hard to maintain moisture through their leaves, allowing more of their energy to go toward root development. According to the UC Master Gardeners of the Lake Tahoe Basin, fall is particularly beneficial for deciduous trees because they can begin establishing roots during cooler conditions and reduced evaporative demand.

That makes autumn a valuable window for getting plants settled before the next growing season.

Roots Have Time to Establish Before Summer

When you plant in spring, a new plant has to divide its attention between developing roots and producing new leaves, flowers, and above-ground growth. A fall-planted tree or shrub, on the other hand, can focus much of its energy on establishing its root system while the weather is cool. This matters tremendously in Tahoe.

By the time summer rolls around, a fall-planted landscape may already have a more established root system to help it handle warmer temperatures and drier conditions. Instead of spending the beginning of summer simply getting established, your plants can be better positioned to take advantage of the growing season.
Think of fall planting as giving your landscape a head start.

Fall Moisture Gives New Plants a Boost

While you should never assume that rainfall alone will provide all the water newly planted vegetation needs, cooler weather and seasonal precipitation can make the establishment period easier than during the heat of summer.

New plants still require appropriate irrigation, particularly during dry periods. In fact, Tahoe Friendly plants generally require irrigation during their first year while they become established.

The key is to maintain consistent moisture without keeping the soil saturated. Your planting location, soil type, plant selection, and weather all matter.

Vibrant autumn leaves scattered across the forest floor, capturing the essence of fall.

Some Factors to Consider for Fall Planting

Don’t wait until the ground freezes.

The goal is to plant while the soil is still workable and before the ground freezes. You want to give plants enough time to establish roots before winter conditions become severe.

Choose native or adaptive native plants for success.

Rather than trying to force plants designed for a completely different climate to survive here, consider native and Tahoe-adapted species that are better suited to our conditions. Native plants also contribute to a healthy local ecosystem in many ways.

Hold off on planting tender species until the spring.

Not every plant should automatically be planted in fall. Some tender or marginally hardy species may be better planted in spring, and planting dates can vary based on elevation, weather, and the specific plant.

Give Your Landscape a Strong Start This Fall

For South Lake Tahoe homeowners, autumn is more than the season when the leaves change color and the temperatures drop. It’s an important planting opportunity.

Cooler temperatures reduce transplant stress. Longer periods of mild weather allow roots to develop. Seasonal moisture can support establishment, and fall planting gives trees and shrubs additional time to prepare for the demands of the following summer.

If you’re thinking about adding trees, shrubs, perennials, native plants, or other landscape improvements to your South Lake Tahoe property, don’t overlook autumn. A little planning now can help your landscape get established before the next growing season—and give you a beautiful, healthier yard for years to come.

We’re Here to Help!

Stop by Aspen Hollow Nursery this fall and talk with a knowledgeable plant professional about what will thrive in your yard. The best time to create next year’s landscape may be right now.

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