One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when it's possible to plant snapdragons is to look at the USDA zone info for Harlingen.

Planting Calendar for Snapdragons

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

Snapdragons can survive in mild cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant snapdragons in Harlingen 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 snapdragons and expect a good harvest is probably October. Any later than that and your snapdragons may not have a chance to fully mature. Starting your snapdragons 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 Harlingen. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Harlingen and it is different every year. Since half of the time in Harlingen there is a last frost after February 15 be ready to protect your snapdragons in the event of a surprise late frost.

USDA Zone Info for Harlingen

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 Harlingen

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