The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for Columbia it's a good idea to estimate when it's the best time to plant snapdragons.

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 some cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant snapdragons in Columbia is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant snapdragons and expect a good harvest is probably September. Any later than that and your snapdragons may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your snapdragons indoors.

Last Frost Date

On average the last frost is on April 15 in Columbia. You should expect an average low temperature of 0°F in the coldest months of winter.

Always keep in mind that USDA zone info for Columbia may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Columbia last frost occurs after April 15 so just be sure to be ready to protect your snapdragons if you have a surprise late frost.

USDA Zone Info for Columbia

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Columbia

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