Castle Rock, Colorado falls entirely within USDA Hardiness Zone 5b, featuring average annual minimum temperatures of -15°F to -10°F (-26.1°C to -23.3°C), according to the 2023 USDA update.
Zone 5b covers all neighborhoods throughout the city, including Downtown Castle Rock, The Meadows, Crystal Valley Ranch, Founders Village, Sapphire Pointe, and Metzler Ranch.
To verify your Castle Rock, Colorado, USDA zone use our three tools given below, zipcode to planting zone search tool, interactive map, or planting zone table.
Castle Rock Planting Zones by ZipCode
Enter your Castle Rock 5 digit Zip-code to find its USDA Planting Zone.
Castle Rock Planting Zones Map
Select or type your Castle Rock location in the search box below to find its USDA Growing Zone.
City Name
Castle Rock Area Planting Zone
Planting Zones
Planting Zones
Castle Rock Planting Zones Table
Below given table lists all the Castle Rock locations with their USDA Hardiness Zones.
| Castle Rock Location | Planting Zone |
|---|---|
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Plants for Castle Rock Growing Zone
Castle Rock, Colorado is entirely within USDA Planting Zone 5b and covers all neighborhoods throughout the city. Zone 5b supports cold-hardy trees like Paperbark Maple (Acer griseum) and River Birch (Betula nigra), shrubs like Ninebark (Physocarpus opulifolius) and Hydrangea (Hydrangea spp.), and perennials like Black-eyed Susan (Rudbeckia hirta) and Russian Sage (Perovskia atriplicifolia).
