One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant scabiosa in International Falls can be figured out by using the USDA zone info.

Planting Calendar for Scabiosa

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

Scabiosa do well in moderate cold which tells us that 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 scabiosa in International Falls 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 scabiosa and expect a good harvest is probably August. Any later than that and your scabiosa may not have a chance to fully mature. Starting your scabiosa indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in International Falls. In the coldest months of winter you should expect an average low temperature of -40°F.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for International Falls and it is different every year. Since half of the time in International Falls it frosts late in the year after May 15 be ready to cover your scabiosa if you have a surprise late frost.

USDA Zone Info for International Falls

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-40°F
Highest Expected Low	-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in International Falls

You may be interested in your other planting guides for International Falls.