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.

A way of determining when it's possible to plant pentas is to consult the USDA zone info for Lathrop.

Planting Calendar for Pentas

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

It's probably a bad idea to plant pentas until after the last frost has passed because they require warm weather.

The earliest that you can plant pentas in Lathrop 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 pentas and expect a good harvest is probably September. If you wait any later than that and your pentas may not have a chance to grow to maturity. Starting your pentas 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 Lathrop. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Lathrop may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Lathrop you get surprised by a frost after February 15 be ready to cover your pentas in the event of one of those late frosts.

USDA Zone Info for Lathrop

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 Lathrop

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