When to Plant Nemesia in Clayton, CA

One of the first steps you take when you are figuring out 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.

You can figure out when it's the best time to plant nemesia in Clayton by looking at the USDA zone info.


Planting Calendar for Nemesia

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

Nemesia are not cold tolerant which means that it's important to wait until it warms up after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant nemesia
Possibly ok, but a risky time to plant nemesia
Probably not a good time to plant nemesia

The earliest that you can plant nemesia in Clayton 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. Any later than that and 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 Clayton. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Clayton is an average and the actual date of last frost will vary from year to year. Half of the time in Clayton you get surprised by a frost after February 15 so make sure that you are prepared to cover your nemesia in the event of a late frost.

USDA Zone Info for Clayton

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 Low25°F
Highest Expected Low30°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 Clayton

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