One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant plectranthus in Arcata can be figured out by reviewing the USDA zone info.

Planting Calendar for Plectranthus

Frost tolerance for plectranthus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's probably not a good idea to plant plectranthus until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant plectranthus in Arcata 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. Any later than that and your plectranthus may not have a chance to grow to maturity. Starting your plectranthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Arcata. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Arcata is an average the actual date of last frost will vary from year to year. Half of the time in Arcata last frost occurs after February 15 so be sure to be ready to protect your plectranthus if you have a late frost.

USDA Zone Info for Arcata

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 Arcata

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