The USDA Zone info is a great tool for gardeners to help us figure out 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.

By reviewing the USDA zone info for Phoenix it's a good idea to determine when you can plant plectranthus.

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 a bad idea to plant plectranthus until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant plectranthus in Phoenix is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant plectranthus and expect a good harvest is probably August. If you wait any later than that and your plectranthus may not have a chance to grow to maturity. If you are starting your plectranthus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Phoenix. You can expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Phoenix is not always accurate the actual date of last frost is different every year. Since half of the time in Phoenix last frost occurs after March 15 be ready to cover your plectranthus in the event of a late frost.

USDA Zone Info for Phoenix

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Phoenix

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