One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's the best time to plant matricaria is to look at the USDA zone info for San Juan.

Planting Calendar for Matricaria

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

Matricaria can survive in mild cold which tells us that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant matricaria in San Juan 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. Any later than that and your matricaria may not have a chance to grow to maturity. Starting your matricaria indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in San Juan. In the coldest months of winter you can expect an average low temperature of 25°F.

It's important to remember that USDA zone info for San Juan may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in San Juan there is a last frost after February 15 so be sure to be ready to cover your matricaria in the event of a late frost.

USDA Zone Info for San Juan

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 Low	25°F
Highest Expected Low	30°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 San Juan

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