What Growing Zone Is Royal Kunia?

Our records indicate the United States Department of Agriculture has given Royal Kunia a growing zone designation of 12a. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Royal Kunia's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Royal Kunia's weather data from 1991 - 2020 in their analysis.

map of growing zone 12aLatest HI growing zone map

If you are looking for plants suitable for growing in the Royal Kunia area, head on over to our page on plants that grow well in Royal Kunia, HI.

Metal Seed Storage Box

Metal Seed Storage Box

Organized storage solution for your seed collection.
Rustic Iron Garden Trellis

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.
Brass Decorative Faucet Handle

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.
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Worm Composting Kit

Complete kit for starting your own worm composting system.
Raised Garden Bed Kit

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.
map of growing zone 12aLatest HI growing zone map

The growing zone is a measure of the lowest temperature that a plant can survive based on average lowest year temperatures, helping you to decide what plants would grow best in your particular climate. Since Royal Kunia is in growing zone 12a this means that plants there can survive temperatures as low as 50 to 55 degrees Fahrenheit. Plants for Royal Kunia's climate should be chosen with this in mind, or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA growing zone map of the United States

Some zones may have been changed by the USDA as of 2023. To see if the Royal Kunia area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.

map of usda hardiness zone changes from 2012 to 2023Half zone changes from 2012 to 2023

The updated map shows that over half of the Southeast has warmed by about half a zone. For gardeners, that means you can now grow plants that tolerate a bit more heat and less frost than before. The tan areas reflect this shift. Meanwhile, the white areas had slight temperature changes, but not enough to move them into a new zone. In the Western U.S., a few spots shifted cooler. That’s not due to a colder climate, but because the new map uses a larger dataset, giving a more accurate picture of local conditions. It's important to keep track of these changes when planning your garden!

Hardiness Zone FAQ

Have questions about hardiness zones and what they mean for your garden? Check out our FAQ below for quick answers to common questions about USDA hardiness zones and how they affect plant selection in Royal Kunia, HI.

The USDA hardiness zone is 12a for Royal Kunia. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

Royal Kunia's Growing Zone Details

USDA Growing Zone: 12a

Zip Codes: 96797

Longitude: -158.0318

Latitude: 21.4053

Lowest Avg Temperatures (F): 50 to 55

Seed Starting Trays

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.
Brass Decorative Faucet Handle

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.
Reusable Grow Bags

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Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
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Fun and decorative garden sign to add personality to your space.
Brass Watering Can

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Elegant brass watering can with classic design and durability.

Map of the Royal Kunia Area

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Seed Starting Trays

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Perfect for starting seeds indoors before transplanting to your garden.
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Organized storage solution for your seed collection.

Plants For Other States

Looking for the best plants in a different area of the United States? Click on a button below to find plants that are ideal for that state's temperatures.

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Complete kit for starting your own worm composting system.
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Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.
Brass Decorative Faucet Handle

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.
Metal Seed Storage Box

Metal Seed Storage Box

Organized storage solution for your seed collection.
Deluxe Plastic Watering Can

Deluxe Plastic Watering Can

High-capacity watering can with comfortable grip and precise spout.

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