The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when it's the best time to plant vinca vine is to examine the USDA zone info for Gridley.

Planting Calendar for Vinca Vine

Frost tolerance for vinca vine:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since vinca vine do well in moderate cold you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant vinca vine in Gridley is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant vinca vine and expect a good harvest is probably October. Any later than that and your vinca vine may not have a chance to really do well. You can get started a little bit earlier by starting your vinca vine indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Gridley. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Gridley may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Gridley it frosts late in the year after February 15 so make sure that you are ready to cover your vinca vine in the event of one of those late frosts.

USDA Zone Info for Gridley

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 Gridley

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