One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when it's a good idea to plant twinspur by looking at the USDA zone info for Corning.

Planting Calendar for Twinspur

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

Twinspur are moderately cold tolerant which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant twinspur in Corning 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 twinspur and expect a good harvest is probably October. Any later than that and your twinspur may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your twinspur indoors.

Last Frost Date

In Corning the average date of last frost happens on February 15. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Corning may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Corning you get a frost after February 15 be ready to protect your twinspur in the event of a late frost.

USDA Zone Info for Corning

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Corning

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