When to Plant Snapdragons in Decatur, IL

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.

You will be able to determine when it's possible to plant snapdragons by using the USDA zone info for Decatur.


Planting Calendar for Snapdragons

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

Snapdragons tend to make it in moderate cold which means that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant snapdragons
Possibly ok, but a risky time to plant snapdragons
Probably not a good time to plant snapdragons

The earliest that you can plant snapdragons in Decatur 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. If you wait 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

The average date of last frost is April 15 in Decatur. In the coldest months of winter you should expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Decatur is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Decatur you get surprised by a frost after April 15 so make sure that you are prepared to protect your snapdragons if you have a surprise late frost.

USDA Zone Info for Decatur

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Decatur

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