One of the first steps you take when you are determining your gardening schedule is find your 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 USDA zone info for Simi Valley can be reviewed to figure out when it's the best time to plant nemesia.

Planting Calendar for Nemesia

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

You should not plant nemesia until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant nemesia in Simi Valley 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 nemesia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your nemesia may not have a chance to really do well. You can get started a few weeks earlier by starting your nemesia indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Simi Valley. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Simi Valley may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Simi Valley last frost occurs after February 15 so always be ready to cover your nemesia in the event of a surprise late frost.

USDA Zone Info for Simi Valley

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 Simi Valley

You may be interested in your other planting guides for Simi Valley.