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.

In Holmen you can determine when it's possible to plant snapdragons by checking out the USDA zone info.

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 a little bit of cold which means that you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant snapdragons in Holmen 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 snapdragons and expect a good harvest is probably August. Any later than that and your snapdragons may not have a chance to really do well. 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 May 15 in Holmen. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Holmen is not always accurate the actual date of last frost is different every year. Half of the time in Holmen you get a frost after May 15 so make sure that you are ready to protect your snapdragons if you have a surprise late frost.

USDA Zone Info for Holmen

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Holmen

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