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.

By looking at the USDA zone info for Rohnert Park you will be able to estimate when it's a good idea to plant lovage.

Planting Calendar for Lovage

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

Lovage are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant lovage in Rohnert Park 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 lovage and expect a good harvest is probably September. Any later than that and your lovage may not have a chance to really do well. You can get started a few weeks earlier by starting your lovage indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Rohnert Park. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Rohnert Park is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Rohnert Park it frosts late in the year after February 15 be ready to cover your lovage if you have a late frost.

USDA Zone Info for Rohnert Park

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 Rohnert Park

You may be interested in your other planting guides for Rohnert Park.