The USDA Zone info is a great tool for gardeners to help us determine 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.

The USDA zone info for Holmen can be reviewed to determine when you can plant gerbera.

Planting Calendar for Gerbera

Frost tolerance for gerbera:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Gerbera do ok in moderate cold which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant gerbera in Holmen is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant gerbera and expect a good harvest is probably August. Any later than that and your gerbera may not have a chance to fully mature. If you are starting your gerbera indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Holmen the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for Holmen is just an average and the actual date of last frost is different every year. Since half of the time in Holmen last frost occurs after May 15 be ready to cover your gerbera 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.