One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

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

Planting Calendar for Violets

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

Since violets are moderately cold tolerant you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant violets in Berlin 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 violets and expect a good harvest is probably August. You probably don't want to wait any later than that or else your violets may not have a chance to fully mature. You can get started a few weeks earlier by starting your violets indoors.

Last Frost Date

The average date of last frost is May 15 in Berlin. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for Berlin may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Berlin there is a last frost after May 15 be ready to protect your violets in the event of a surprise late frost.

USDA Zone Info for Berlin

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 Berlin

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