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.

The earliest that you can plant plectranthus in Colusa should be estimated by looking at the USDA zone info.

Planting Calendar for Plectranthus

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

It's a bad idea to plant plectranthus until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant plectranthus 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 plectranthus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your plectranthus may not have a chance to really do well. Starting your plectranthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Colusa the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Colusa and it will vary from year to year. Half of the time in Colusa you get a frost after February 15 so make sure that you are prepared to cover your plectranthus in the event of a surprise 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.