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Planting Zones: All About USDA Hardiness Zones for Growing Plants

February 5, 2023

Growing Zone Overview

Gardening zones are a tool used by gardeners around the world to determine which plants are best suited for their specific region. The zones are determined based on the average minimum temperature of a region and how it affects the growth of plants. By understanding the gardening zones, you can determine what plants will thrive in your garden and which plants might struggle.

The United States Department of Agriculture (USDA) divides the country into 13 different hardiness zones, numbered 1 through 13. Zone 1 is the coldest, with an average minimum temperature of -60 degrees Fahrenheit, while Zone 13 is the warmest, with an average minimum temperature of 70 degrees Fahrenheit. The zones take into consideration not only the coldest temperatures of a region, but also factors such as humidity, rainfall, and other environmental factors.

When selecting plants for your garden, it’s important to consider the average minimum temperature of your region. This will help you determine which plants will be best suited for your climate. Many plants come with a label that indicates the zones in which they can thrive. For example, a perennial flower may be labeled as “hardy in zones 5-9”, which means it can survive in those zones, but may not survive in zones 1-4 or 10-13.

planting zone map
USDA Hardiness Zones (Click for bigger image)

If you’re unsure of what gardening zone you live in, you can use the USDA Plant Hardiness Zone Map to determine your zone. This map shows the zones for the entire United States, as well as parts of Canada and Mexico. You can also find specific zone maps for individual states. Once you know your zone, you can use the information to select plants that are best suited for your region.

When selecting plants, it’s important to take into account other factors such as sunlight and soil quality. Some plants require full sun, while others prefer more shade. Additionally, some plants may be better suited for sandy soils, while others may need more moisture. Keep in mind that different plants may require different soil types and sunlight levels, so it’s important to research each plant before you plant it in your garden.

Gardening zones are a great tool for gardeners, as they can help you determine which plants are best suited for your region. By understanding your zone and other factors such as sunlight and soil quality, you can ensure that the plants you select will thrive in your garden.

Want more info? See our Growing Zone FAQ