Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of figuring out when it's the best time to plant gaillardia is to examine the USDA zone info for San Bruno.

Planting Calendar for Gaillardia

Frost tolerance for gaillardia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant gaillardia just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant gaillardia in San Bruno is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant gaillardia and expect a good harvest is probably September. If you wait any later than that and your gaillardia may not have a chance to grow to maturity. If you are starting your gaillardia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on January 31 in San Bruno. In the coldest months of winter you can expect an average low temperature of 30°F.

Since the USDA zone info for San Bruno is not always accurate the actual date of last frost is different every year. Since half of the time in San Bruno last frost occurs after January 31 be ready to cover your gaillardia if you have a surprise late frost.

USDA Zone Info for San Bruno

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in San Bruno

You may be interested in your other planting guides for San Bruno.