What Growing Zone Is Waimalu?

Our records indicate the United States Department of Agriculture has given Waimalu 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 Waimalu's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Waimalu's weather data from 1991 - 2020 in their analysis.

Latest HI growing zone map

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

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Hydroponic Garden Grow Kit

Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.

Brass Watering Can

Elegant brass watering can with classic design and durability.

Raised Garden Planter

Elevated planter for easy access and better drainage.

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Latest 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 Waimalu is in growing zone 12a this means that plants there can survive temperatures as low as 50 to 55 degrees Fahrenheit. Plants for Waimalu'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.

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

Half 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 Waimalu, HI.

Waimalu's Growing Zone Details

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.

Raised Garden Planter

Elevated planter for easy access and better drainage.

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.

Metal Seed Storage Box

Organized storage solution for your seed collection.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Map of the Waimalu Area

All Towns In HI

Deluxe Plastic Watering Can

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

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Cluck Around Sign

Whimsical sign for your chicken coop area.

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

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.

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.

Stainless Steel Garden Tool Set

Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.