Best Plants For New Castle, CO

A variety of plants are suitable for New Castle's climate. The growing zone for the area is usually 6a, with average annual lows of -10 to -5 degrees Fahrenheit. Scroll down for a full list of the best plants for New Castle, CO based on our analysis of the region's information.

If growing food is your aim, vegetables hardy to New Castle include beans, beets and bell peppers, while fruits like apples, apricot and blackberries will flourish.

For flower beds, go with choices like black-eyed susan, bleeding heart and butterfly bush for the best results.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Trees for New Castle

American Elm

Balsam Fir

Black Cherry

Black Walnut

Colorado Blue Spruce

Common Juniper

Dogwood

Eastern Redbud

Eastern White Pine

Honey Locust

Japanese Maple

Northern Red Oak

Norway Spruce

Paper Birch

Pin Oak

Red Maple

Sugar Maple

Sweetgum

White Ash

Yellow Buckeye

Fruits for New Castle

Apples

Apricot

Blackberries

Blueberries

Currants

Elderberries

Figs

Grapes

Hardy kiwi

Mulberries

Nectarines

Peach

Pears

Persimmons

Plums

Quince

Raspberries

Sour cherries

Strawberries

Sweet cherries

Fiskars Garden Harvest Basket

Sturdy basket for collecting and carrying your garden harvest.

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.

Flowers for New Castle

Black-eyed Susan

Bleeding heart

Butterfly Bush

Columbine.

Coneflower

Daffodils

Daylily

Geranium

Hydrangea

Lavender

Marigold

Pansies

Peony

Rhododendron

Rose

Salvia

Shasta Daisy

Sunflower

Tulips

Zinnia

Vegetables for New Castle

Beans

Beets

Bell Peppers

Broccoli

Carrots

Cauliflower

Corn

Cucumbers

Eggplant

Green Onions

Kale

Lettuce

Peas

Radishes

Spinach

Squash

Swiss Chard

Tomatoes

Turnips

Zucchini

Map of CO Hardiness Zones

Choose plants with your zone in mind

Choosing plants based on the growing zone for New Castle ensures that your plants will be able to survive the lowest annual temperatures in your area of Colorado.

Worm Composting Kit

Complete kit for starting your own worm composting system.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Wooden Chicken Coop

Spacious and secure home for your backyard chickens.

Hydroponic Garden Grow Kit

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

Metal Seed Storage Box

Organized storage solution for your seed collection.

Best Time to Plant in New Castle

Check the growing calendar for New Castle at the Old Farmer's Almanac to see the best planting times for the region.

Need Gardening Gear?

The Plant Guide Online has selected some of our favorite products to help you with your next growing project. From seed starting trays and fertilizers to decor and lifestyle items, we think you'll love what we've selected.

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Raised Garden Bed Kit

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

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.

Hoeing Ain't Easy Garden Sign

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

Hydroponic Garden Grow Kit

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

Raised vegetable bed rows in zone 8a

New Castle's Temperature

USDA Growing Zone: 6a

Zip Codes: 81647

Longitude: -107.5267

Latitude: 39.5776

Lowest Avg Temperatures (F): -10 to -5

The USDA growing zone is 6a in New Castle, CO. This is a measure of the lowest temperature that a plant can survive, helping to decide what plants would be suitable for the region's climate. According to our records, the average annual extreme minimum temperature in New Castle is -10 to -5 degrees Fahrenheit. If you would like to learn more, visit our page on the growing zone for New Castle, CO.

Map of New Castle

Hydroponic Garden Grow Kit

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

Raised Garden Bed Kit

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

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Brass Decorative Faucet Handle

Elegant brass handle to enhance your garden faucet.

Cluck Around Sign

Whimsical sign for your chicken coop area.

All Towns In CO

Acres Green Aetna Estates Aguilar Air Force Academy Akron Alamosa Alamosa East Allenspark Alma Alpine Altona Amherst Antonito Applewood Arapahoe Arboles Aristocrat Ranchettes Arriba Arvada Aspen Aspen Park Atwood Ault Aurora Avon Avondale Bark Ranch Basalt Battlement Mesa Bayfield Bennett Berkley Berthoud Bethune Beulah Valley Black Forest Black Hawk Blanca Blende Blue River Blue Sky Blue Valley Bonanza Bonanza Mountain Estates Boone Boulder Bow Mar Brandon Branson Breckenridge Brick Center Briggsdale Brighton Brook Forest Brookside Broomfield Brush Buena Vista Burlington Byers Calhan Campo Cañon City Capulin Carbondale Cascade-Chipita Park Castle Pines Castle Pines Village Castle Rock Cathedral Catherine Cattle Creek Cedaredge Centennial Center Central City Chacra Cheraw Cherry Creek Cherry Hills Village Cheyenne Wells Cimarron Hills City of Creede Clifton Coal Creek Coaldale Cokedale Collbran Colona Colorado City Colorado Springs Columbine Columbine Valley Comanche Creek Commerce City Conejos Cope Copper Mountain Cortez Cotopaxi Craig Crawford Crested Butte Crestone Cripple Creek Crisman Crook Crowley Dacono Dakota Ridge De Beque Deer Trail Del Norte Delta Denver Derby Dillon Dinosaur Divide Dolores Dotsero Dove Creek Dove Valley Downieville-Lawson-Dumont Durango Eads Eagle East Pleasant View Eaton Echo Hills Eckley Edgewater Edwards El Jebel El Moro Elbert Eldora Eldorado Springs Elizabeth Ellicott Empire Englewood Erie Estes Park Evans Evergreen Fairmount Fairplay Federal Heights Firestone Flagler Fleming Florence Florissant Floyd Hill Fort Carson Fort Collins Fort Garland Fort Lupton Fort Morgan Fountain Four Square Mile Fowler Foxfield Franktown Fraser Frederick Frisco Fruita Fruitvale Fulford Garden City Gardner Garfield Genesee Genoa Georgetown Gerrard Gilcrest Glendale Gleneagle Glenwood Springs Gold Hill Golden Goldfield Granada Granby Grand Junction Grand Lake Grand View Estates Greeley Green Mountain Falls Greenwood Village Grover Guffey Gunbarrel Gunnison Gypsum Hartman Hartsel Hasty Haswell Haxtun Hayden Heeney Hidden Lake Highlands Ranch Hillrose Hoehne Holly Holly Hills Holyoke Hooper Hot Sulphur Springs Hotchkiss Howard Hudson Hugo Idaho Springs Idalia Idledale Ignacio Iliff Indian Hills Inverness Jackson Lake Jamestown Jansen Joes Johnson Village Johnstown Julesburg Keenesburg Ken Caryl Kersey Keystone Kim Kiowa Kirk Kit Carson Kittredge Kremmling La Jara La Junta La Junta Gardens La Salle La Veta Lafayette Laird Lake City Lakeside Lakewood Lamar Laporte Larkspur Las Animas Lazear Lazy Acres Leadville Leadville North Lewis Leyner Limon Lincoln Park Littleton Lochbuie Log Lane Village Loghill Village Loma Lone Tree Longmont Louisville Louviers Loveland Lynn Lyons Manassa Mancos Manitou Springs Manzanola Marble Marvel Matheson Maybell Maysville McClave McCoy Mead Meeker Meridian Meridian Village Merino Midland Milliken Minturn Moffat Monte Vista Montezuma Montrose Monument Morgan Heights Morrison Mount Crested Butte Mountain Meadows Mountain View Mountain Village Mulford Nathrop Naturita Nederland New Castle Niwot No Name Norrie North La Junta North Washington Northglenn Norwood Nucla Nunn Oak Creek Olathe Olney Springs Ophir Orchard Orchard City Orchard Mesa Ordway Otis Ouray Ovid Padroni Pagosa Springs Palisade Palmer Lake Paoli Paonia Parachute Paragon Estates Park Center Parker Parshall Peetz Penrose Peoria Perry Park Peyton Phippsburg Piedra Pierce Pine Brook Hill Pine Valley Pitkin Placerville Platteville Poncha Springs Ponderosa Park Portland Pritchett Pueblo Pueblo West Ramah Rangely Raymer Red Cliff Red Feather Lakes Redlands Redstone Redvale Rico Ridgway Rifle Rock Creek Park Rockvale Rocky Ford Rollinsville Romeo Roxborough Park Rye Saddle Ridge Saguache Salida Salt Creek San Acacio San Luis Sanford Sawpit Security-Widefield Sedalia Sedgwick Segundo Seibert Seven Hills Severance Shaw Heights Sheridan Sheridan Lake Sherrelwood Sierra Ridge Silt Silver Cliff Silver Plume Silverthorne Silverton Simla Smeltertown Snowmass Village Snyder Somerset South Fork Southern Ute Springfield St. Ann Highlands St. Mary's Starkville Steamboat Springs Stepping Stone Sterling Sterling Ranch Stonegate Stonewall Gap Strasburg Stratmoor Stratton Sugar City Sugarloaf Sunshine Superior Swink Tabernash Tall Timber Telluride The Pinery Thornton Timnath Todd Creek Towaoc Towner Trail Side Trinidad Twin Lakes Two Buttes Upper Bear Creek Upper Witter Gulch Vail Valdez Valmont Vernon Victor Vilas Vineland Vona Walden Walsenburg Walsh Ward Watkins Welby Weldona Wellington West Pleasant View Westcliffe Westcreek Westminster Weston Wheat Ridge Wiggins Wiley Williamsburg Windsor Winter Park Wolcott Woodland Park Woodmoor Woody Creek Wray Yampa Yuma

Tools You'll Love

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Stainless Steel Garden Tool Set

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

Raised Garden Bed Kit

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

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

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.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Metal Seed Storage Box

Organized storage solution for your seed collection.

Reusable Grow Bags

Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

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