California Climate Zones - Garden Zeus

California Climate Zones

Welcome to GardenZeus California Climate Zones, an innovative, dynamic climate-mapping system with free search by zip code. Rather than relying on the single metric of annual low temperature or a few data points, we considered many factors including historic weather data for the entire state. With effort and iterations over years, GardenZeus distilled California's diverse climate into just 15 climate zones and assigned zones to the thousands of zip codes in California. We believe that GZ Zones provide the most accessible and useful climate-mapping system that exists for general understanding of California climate and hyper-local gardening and horticulture. Want to you know your zone? Just search by zip code.

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  • CA Zone 1: Cold Mountain Areas
  • CA Zone 2: Cold Winters, Northern or Wetter
  • CA Zone 3: Northern Inland, More Extreme
  • CA Zone 4: Northern Inland, Less Extreme
  • CA Zone 5: Northern Strong Coastal Influence
  • CA Zone 6: Northern Coastal
  • CA Zone 7: Northern Mild Summers, Wet Winters
  • CA Zone 8: Hot Central Valley
  • CA Zone 9: Cold Winters, Southern or Drier
  • CA Zone 10: High Desert
  • CA Zone 11: Low Desert
  • CA Zone 12: Southern Inland, More Extreme
  • CA Zone 13: Southern Inland, Less Extreme
  • CA Zone 14: Southern Strong Coastal Influence
  • CA Zone 15: Southern Coastal

CA Zone 1: Cold Mountain Areas

The coldest high-elevation areas in California with a short growing season and winter temperatures that may drop to well below zero Fahrenheit. Lake Tahoe is the most densely populated area in this zone. CA Zone 1: Cold Mountain Areas

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Radish, General Radish, General Raphanus sativus Radishes are annual or biennial, cold-season cruciferous vegetables in the Brassica family (Brassicaceae), related to turnips, arugula, broccoli, and cabbage.... Pea, Snap and Snow Pea, Snap and Snow Pisum sativum Snap peas (Pisum sativum var. macrocarpum) and snow peas (Pisum sativum var. saccharatum) are annual, cool-season legumes. Their taxonomic... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 2: Cold Winters, Northern or Wetter

High-rainfall areas with cool-to-hot summers and generally mild but unpredictable winters with temperatures dropping at times to well below freezing. Includes many Northern foothill and mountain areas such as Auburn and Nevada City, along with scattered areas and odd pockets as far south as the southern end of the Sierra Nevadas. CA Zone 2: Cold Winters, Northern or Wetter

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Garlic Garlic Allium sativum Garlic is a cool-season perennial grown as an annual; part of the Amaryllidaceae family, closely related to onions, chives, leeks, and many ornamental plants including... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 3: Northern Inland, More Extreme

Northern areas with moderate winters that may include frequent, mild overnight frosts; and generally hot-to-very-hot summers. Includes most areas in Northern California where summer temperatures normally exceed 100 degrees Fahrenheit such as Sacramento and Concord. CA Zone 3: Northern Inland, More Extreme

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Corn, General Corn, General Zea mays The old garden saying, "Harvest corn after the cookpot is boiling," hints at the pleasures at eating corn from the home garden. Because sugars in corn kernels turn... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 4: Northern Inland, Less Extreme

Northern areas with warm-to-hot summers and warm winters that may include mild overnight frosts. Examples include San Jose and San Rafael. CA Zone 4: Northern Inland, Less Extreme

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 5: Northern Strong Coastal Influence

Mild Northern areas, generally without frost, and with mild summers that rarely exceed 90 degrees Fahrenheit. Includes Santa Cruz and nearby areas, much of the San Francisco Peninsula such as Palo Alto, and portions of the East Bay. CA Zone 5: Northern Strong Coastal Influence

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... California Poppy California Poppy Eschscholzia californica California Poppy is the iconic state flower of California, a perennial often grown as an annual, and part of the poppy family (Papaveraceae). It’s known for its... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 6: Northern Coastal

Northern areas with mild, frost-free winters and cool-to-warm summers. Cloudiness, overcast skies, and/or fog may occur year-round but more persistently during summer. Includes coastal cities such as San Francisco, Monterey, and Carmel. CA Zone 6: Northern Coastal

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Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Lettuce, Looseleaf Lettuce, Looseleaf Lactuca sativa Looseleaf or loose leaf lettuce is the most common lettuce grown in California home gardens. Its name results from its loosely bunched leaves, as opposed to the... California Poppy California Poppy Eschscholzia californica California Poppy is the iconic state flower of California, a perennial often grown as an annual, and part of the poppy family (Papaveraceae). It’s known for its...

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CA Zone 7: Northern Mild Summers, Wet Winters

Northern areas with high-to-very-high rainfall; cool-to-cold year-round temperatures; and occasional cold snaps during winter with temperatures below freezing. Cloudiness, overcast skies, and/or fog may occur year-round, sometimes persisting for long periods. Examples include coastal areas such as Crescent City and Eureka, and the San Lorenzo Valley. CA Zone 7: Northern Mild Summers, Wet Winters

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 8: Hot Central Valley

The warmest areas in California's Central Valley and similar inland areas, with very hot summers and cold winters that may include frosts and cold snaps to well below freezing. Includes Fresno and Bakersfield. CA Zone 8: Hot Central Valley

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Pepper, Hot Pepper, Hot Capsicum annum et al Hot peppers are perennial plants in the Solanaceae family, which has 90 genera, and between 2,000-3000 species. Most of the plants in this family originate from... California Poppy California Poppy Eschscholzia californica California Poppy is the iconic state flower of California, a perennial often grown as an annual, and part of the poppy family (Papaveraceae). It’s known for its...

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CA Zone 9: Cold Winters, Southern or Drier

Southern and lower-rainfall areas with warm-to-hot summers and generally mild but unpredictable winters that can drop to well below freezing. Includes parts of Agoura Hills and Topanga, canyons near Malibu, and Lake Arrowhead. CA Zone 9: Cold Winters, Southern or Drier

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 10: High Desert

Desert areas generally several hundred feet and higher in elevation with low annual rainfall, hot summers, and mild winters that may have cold snaps to well below freezing. Examples include Lancaster, Palmdale, and the Owens Valley. CA Zone 10: High Desert

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 11: Low Desert

California portions of the Colorado Desert and Mojave Desert with very hot summers and generally mild winters that may drop to below freezing. Examples include the Coachella Valley, Palm Springs, and the Imperial Valley. CA Zone 11: Low Desert

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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CA Zone 12: Southern Inland, More Extreme

Southern areas with hot-to-very-hot summers and warm winters that may include mild overnight frosts. Includes substantially all of the San Fernando Valley, portions of most Southern inland valleys, and much of Riverside County and San Bernardino County. CA Zone 12: Southern Inland, More Extreme

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CA Zone 13: Southern Inland, Less Extreme

Southern areas with hot summers and occasional, mild overnight frosts, if any. Includes Whittier, many areas in and near downtown Los Angeles, and milder inland-valley areas. CA Zone 13: Southern Inland, Less Extreme

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CA Zone 14: Southern Strong Coastal Influence

Southern areas with moderate-to-strong coastal influence, mild winters generally without frost, and warm summers. Includes many areas in West Los Angeles, many Orange County areas not directly on the coast, and large portions of San Diego County. CA Zone 14: Southern Strong Coastal Influence

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed...

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CA Zone 15: Southern Coastal

Southern coastal areas generally within about 1 to 1.5 miles of the ocean, with moderate-to-cool year-round temperatures, mild winters, and cool-to-warm summers. Includes many beach cities such as Venice, coastal Santa Monica, Newport Beach, and coastal areas of San Diego County. CA Zone 15: Southern Coastal

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Tomato, General Tomato, General Solanum lycopersicum What more beautiful sight is there in the home vegetable garden than a large heirloom tomato coming into ripeness and full color, waiting to be harvested, ribbed... Chard, General Chard, General Beta vulgaris var. cicla Chard is a relatively easy vegetable that offers abundant yields, and is one of the most consistently productive greens during warm weather. A potentially long-lived... Rose, General Rose, General Rosaceae How many plant enthusiasts and gardeners remember a parent's or grandparent's love of roses? At GardenZeus, we are in agreement with those who consider the rose...

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