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.

By using the USDA zone info for San Marcos you will be able to estimate when you can plant tagetes.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since tagetes require warm weather you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant tagetes in San Marcos is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant tagetes and expect a good harvest is probably August. If you wait any later than that and your tagetes may not have a chance to really do well. You can get started a couple of weeks earlier by starting your tagetes indoors.

Last Frost Date

On average the last frost has passed is on March 15 in San Marcos. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for San Marcos is not always accurate the actual date of last frost changes from year to year. Since half of the time in San Marcos it frosts late in the year after March 15 be ready to cover your tagetes in the event of a surprise late frost.

USDA Zone Info for San Marcos

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in San Marcos

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