One of the first steps you take when you are estimating 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.

In Carson you can estimate when it's possible to plant sweet williams by reviewing the USDA zone info.

Planting Calendar for Sweet Williams

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

Sweet Williams do well in moderate cold which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant sweet williams in Carson 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 sweet williams and expect a good harvest is probably October. You probably don't want to wait any later than that or else your sweet williams may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your sweet williams indoors.

Last Frost Date

The average date of last frost is January 31 in Carson. In the coldest months of winter you should expect an average low temperature of 35°F.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Carson and it will vary from year to year. Half of the time in Carson it frosts late in the year after January 31 so always be ready to protect your sweet williams if you have a surprise late frost.

USDA Zone Info for Carson

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Carson

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