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

In Cathedral City you can determine when it's a good idea to plant streptocarpella by referring to the USDA zone info.

Planting Calendar for Streptocarpella

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

Streptocarpella require warm weather which tells us that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant streptocarpella in Cathedral City 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 streptocarpella and expect a good harvest is probably September. Any later than that and your streptocarpella may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your streptocarpella indoors.

Last Frost Date

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

Since the USDA zone info for Cathedral City is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Cathedral City you get surprised by a frost after February 15 be ready to cover your streptocarpella in the event of a late frost.

USDA Zone Info for Cathedral City

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 Cathedral City

You may be interested in your other planting guides for Cathedral City.