When to Plant Begonias in Danville, CA

The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when to plant begonias is to consult the USDA zone info for Danville.


Planting Calendar for Begonias

Frost tolerance for begonias: Not tolerant of frost.
When to plant: After the last frost.

It's probably a bad idea to plant begonias until after the last frost has passed because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant begonias
Possibly ok, but a risky time to plant begonias
Probably not a good time to plant begonias

The earliest that you can plant begonias in Danville is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant begonias and expect a good harvest is probably September. If you wait any later than that and your begonias may not have a chance to grow to maturity. Starting your begonias indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Danville. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Danville may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Danville it frosts late in the year after February 15 so always be ready to cover your begonias if you have a surprise late frost.

USDA Zone Info for Danville

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)February 15
Average Date of First Frost (fall)December 15
Lowest Expected Low25°F
Highest Expected Low30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Danville

You may be interested in your other planting guides for Danville.