What Growing Zone Is Trenton?
Our records indicate the United States Department of Agriculture has given Trenton a growing zone designation of 5b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Trenton's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Trenton's weather data from 1991 - 2020 in their analysis.
If you are looking for plants suitable for growing in the Trenton area, head on over to our page on plants that grow well in Trenton, IA.
Deluxe Plastic Watering Can
High-capacity watering can with comfortable grip and precise spout.
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Small Greenhouse Kit
Compact greenhouse perfect for small spaces.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
Latest IA growing zone mapThe 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 Trenton is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for Trenton'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 Trenton 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 2023The 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!
Trenton's Growing Zone Details
USDA Growing Zone: 5b
Zip Codes: 52641
Longitude: -91.6395
Latitude: 41.066
Lowest Avg Temperatures (F): -15 to -10
Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Reusable Grow Bags
Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.
Worm Composting Kit
Complete kit for starting your own worm composting system.
Metal Arbor Trellis
Decorative arbor trellis for climbing plants and garden entrance.
Large Greenhouse Kit
Spacious greenhouse for extending your growing season.
Map of the Trenton Area
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Seed Starting Trays
Perfect for starting seeds indoors before transplanting to your garden.
Worm Composting Kit
Complete kit for starting your own worm composting system.
Raised Garden Bed Kit
Easy-to-assemble raised garden bed for better soil control and drainage.
Self Watering Plant Pots
Innovative pots that maintain optimal moisture levels.
Metal Seed Storage Box
Organized storage solution for your seed collection.
Plants For Other States:
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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.
Brass Watering Can
Elegant brass watering can with classic design and durability.
Steel Hori Hori Weeding Knife
Versatile Japanese-style gardening knife for weeding and planting.
Worm Composting Kit
Complete kit for starting your own worm composting system.
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