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.

In Calistoga you can estimate when it's a good idea to plant cucumbers by looking at the USDA zone info.

Planting Calendar for Cucumbers

Frost tolerance for cucumbers:	Not tolerant of frost.
When to plant:	After the last frost.

It's not a good idea to plant cucumbers until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant cucumbers in Calistoga 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 cucumbers and expect a good harvest is probably September. Any later than that and your cucumbers may not have a chance to grow to maturity. Starting your cucumbers 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 Calistoga. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for Calistoga is an average the actual date of last frost changes from year to year. Since half of the time in Calistoga you get surprised by a frost after February 15 be ready to protect your cucumbers in the event of a late frost.

USDA Zone Info for Calistoga

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 Calistoga

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