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.

The USDA zone info for Rancho Cucamonga can be looked at to determine when it's a good idea to plant cucumbers.

Planting Calendar for Cucumbers

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

Since cucumbers do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant cucumbers in Rancho Cucamonga 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. You probably don't want to wait any later than that or else your cucumbers may not have a chance to grow to maturity. You can get started a little bit earlier by starting your cucumbers indoors.

Last Frost Date

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

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Rancho Cucamonga and it can change quite a bit from year to year. Since half of the time in Rancho Cucamonga last frost occurs after February 15 be ready to protect your cucumbers if you have a surprise late frost.

USDA Zone Info for Rancho Cucamonga

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 Rancho Cucamonga

You may be interested in your other planting guides for Rancho Cucamonga.