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.

In Algonquin you can figure out when it's a good idea to plant strawflowers by referring to the USDA zone info.

Planting Calendar for Strawflowers

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

Strawflowers are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant strawflowers in Algonquin 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 strawflowers and expect a good harvest is probably August. If you wait any later than that and your strawflowers may not have a chance to grow to maturity. You can get started a little bit earlier by starting your strawflowers indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Algonquin is just an average and the actual date of last frost is different every year. Half of the time in Algonquin there is a last frost after April 15 so be sure to be ready to protect your strawflowers if you have one of those late frosts.

USDA Zone Info for Algonquin

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Algonquin

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