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 Anoka you can figure out when it's possible to plant pyrethrum by using the USDA zone info.

Planting Calendar for Pyrethrum

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

Pyrethrum are moderately cold tolerant which means that you can get them planted earlier than more sensitive plants.

The earliest that you can plant pyrethrum in Anoka 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 pyrethrum and expect a good harvest is probably August. If you wait any later than that and your pyrethrum may not have a chance to really do well. Starting your pyrethrum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Anoka. In the coldest months of winter you should expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Anoka is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Anoka last frost occurs after May 15 so be sure to be ready to cover your pyrethrum if you have one of those late frosts.

USDA Zone Info for Anoka

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 Anoka

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