The USDA Zone info is a great tool for gardeners to help us determine 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 USDA zone info for Colusa should be read to estimate when to plant nolana.

Planting Calendar for Nolana

Frost tolerance for nolana:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

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

The earliest that you can plant nolana in Colusa 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 nolana and expect a good harvest is probably September. If you wait any later than that and your nolana may not have a chance to grow to maturity. You can get started a little bit earlier by starting your nolana indoors.

Last Frost Date

The average date of last frost is February 15 in Colusa. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Colusa is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Colusa there is a last frost after February 15 so always be ready to cover your nolana if you have a late frost.

USDA Zone Info for Colusa

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 Colusa

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