One of the first steps you take when you are getting a good idea 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.

One way of making a decision about when to plant chrysanthemum is to examine the USDA zone info for Vacaville.

Planting Calendar for Chrysanthemum

Frost tolerance for chrysanthemum:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant chrysanthemum until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant chrysanthemum in Vacaville is March. However, you really should wait until April if you don't want to take any chances.

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

Last Frost Date

In Vacaville the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Vacaville is just an average the actual date of last frost will vary from year to year. Half of the time in Vacaville there is a last frost after February 15 so make sure that you are prepared to protect your chrysanthemum if you have a surprise late frost.

USDA Zone Info for Vacaville

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 Vacaville

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