One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant dill in Zone 9a can be figured out by checking out 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 can survive in mild cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant dill in Zone 9a 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 few weeks earlier by starting your dill indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Zone 9a. You can expect an average low temperature of 20°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 9a is not always accurate and the actual date of last frost changes from year to year. Half of the time in Zone 9a you get surprised by a frost after February 15 so make sure that you are prepared to cover your dill if you have a surprise late frost.

USDA Zone Info for Zone 9a

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Zone 9a

You may be interested in your other planting guides for Zone 9a.