What Plants Grow Well In 91789?
The USDA hardiness zone is 10a in the 91789. This zone is a measure of the lowest temperature that a plant can survive, and helps determine what plants would grow best in the area's climate. Below you'll find a list of the best plants for 91789's climate based on this hardiness zone.
Learn more hardiness zones on our page for Walnut's growing zone.

Raised Garden Planter

Steel Hori Hori Weeding Knife

Metal Arbor Trellis

Shiitake Mushroom Kit

Reusable Grow Bags
Trees for 91789
Fruits for 91789
Flowers for 91789
Vegetables for 91789


Planting Advice for 91789
Have questions about planting in 91789's climate? Check out our FAQ below for answers to common questions about growing plants in the area.
Zip code 91789 is in USDA hardiness zone 10a, which means plants there can survive temperatures as low as 30 to 35°F each year.
Best Time to Plant in Walnut
Check the growing calendar for Walnut at the Old Farmer's Almanac to see the best planting times for the region.

Raised Garden Planter

Steel Hori Hori Weeding Knife

Fiskars Garden Harvest Basket

Shiitake Mushroom Kit

Seed Starting Trays

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Other Towns in California
We have plant recommendations for most towns in California. Select a town from the list below to find the best plants for your area based on the latest climate information.
Best Plants By State
California not the right state? We have plant recommendations for every state, town and zip code in the United States. Choose a state from the list below to find the best plants for your area.
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