One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of estimating when to plant lavender cotton is to look at the USDA zone info for San Mateo.

Planting Calendar for Lavender Cotton

Frost tolerance for lavender cotton:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant lavender cotton much earlier in the year because they are very cold tolerant.

The earliest that you can plant lavender cotton in San Mateo 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 lavender cotton and expect a good harvest is probably October. Any later than that and your lavender cotton may not have a chance to fully mature. Starting your lavender cotton indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in San Mateo. You should expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for San Mateo is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in San Mateo you get surprised by a frost after January 31 so be sure to be ready to protect your lavender cotton if you have a late frost.

USDA Zone Info for San Mateo

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 Mateo

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