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.

The first chance to plant matricaria in Rialto can be determined by looking at the USDA zone info.

Planting Calendar for Matricaria

Frost tolerance for matricaria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since matricaria are one of those plants that can tolerate a little bit of cold weather you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant matricaria in Rialto is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant matricaria and expect a good harvest is probably October. If you wait any later than that and your matricaria may not have a chance to really do well. If you are starting your matricaria indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Rialto is an average the actual date of last frost changes from year to year. Half of the time in Rialto it frosts late in the year after January 31 so just be sure to be ready to cover your matricaria if you have a late frost.

USDA Zone Info for Rialto

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 Rialto

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