The Autumnal Equinox signals the start of fall, influencing planting schedules, crop growth, and preparing gardens for cooler weather.
The autumnal equinox, which occurs on September 22 this year, marks the official start of fall. On this day, the sun crosses the celestial equator, resulting in nearly equal amounts of daylight and darkness.
For gardeners, the equinox signals a significant shift in both weather patterns and plant behavior. As the days shorten and temperatures cool, plants begin to prepare for dormancy.
This change affects growth rates, with many plants slowing down and redirecting their energy to root development rather than producing new foliage or flowers.
For cool-season crops, such as lettuce, spinach, and root vegetables like carrots and beets, the post-equinox period offers ideal growing conditions.
Additionally, the lower temperatures of fall, combined with longer nights, help preserve soil moisture, making it easier for gardeners to manage watering needs.
The equinox also impacts the timing of planting and harvesting. Many fall-planted vegetables need to be in the ground just before or around the equinox to establish roots before the colder weather sets in.
Perennials and trees, when planted at this time, have an opportunity to develop strong root systems, which better equip them to survive the winter and flourish in spring.
Furthermore, as the growing season winds down for warm-season crops, the equinox serves as a reminder for gardeners to begin preparing their gardens for winter, whether by mulching, pruning, or protecting plants from frost.
Ultimately, the autumnal equinox not only marks a celestial event but also plays a crucial role in determining the success of fall gardening in the Northern Hemisphere, influencing everything from planting schedules to crop yields.
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About The Author
John Bagnasco has been in the gardening industry for over 50 years, starting with a horticulture degree from Michigan State University and following a stint at Frank’s Nursery and Crafts in Detroit.
After publishing his first book “Plants for the Home Vol. I” in 1976, he moved to California to become regional manager and buyer for the Nurseryland division of Sunbelt Nursery Group.
He then became the head buyer for Armstrong Garden Centers based in Glendora, California. John had a part-time affiliation with Creative Promotions for ten years before joining them full-time in October 2000 as a senior editor and radio personality for Garden Compass.
John has also taught horticulture classes at Palomar College and San Diego State University.
He is the host of the DVD “The Essential Guide to Roses,” which also features Bryan Main and Bruce and Sharon Asakawa.
His most recent book is “Planting Designs for Cacti and Succulents”.
Currently, John is a co-host on “Garden America,” an interactive live gardening show that additionally provides podcasts of the broadcasts accessible on all major platforms.
You can contact John here.