The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant dill in Rio Vista should be estimated by reviewing the USDA zone info.

Planting Calendar for Dill

Frost tolerance for dill:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Dill do ok in moderate cold which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant dill in Rio Vista is February. However, you really should wait until March if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is February 15 in Rio Vista. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Rio Vista may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Rio Vista you get a frost after February 15 be ready to cover your dill if you have one of those late frosts.

USDA Zone Info for Rio Vista

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 Rio Vista

You may be interested in your other planting guides for Rio Vista.