One of the best tools that you have as gardeners to help us figure out 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 Del Rio you can determine when you can 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 has passed.

It's probably a bad 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 Del Rio 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 really do well. If you are starting your cucumbers indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Del Rio. In the coldest months of winter you can expect an average low temperature of 20°F.

Keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Del Rio and it changes from year to year. Half of the time in Del Rio you get surprised by a frost after February 15 so make sure that you are ready to protect your cucumbers if you have a surprise late frost.

USDA Zone Info for Del Rio

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 Del Rio

You may be interested in your other planting guides for Del Rio.