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 first chance to plant nasturtium in Algonquin should be determined by using the USDA zone info.

Planting Calendar for Nasturtium

Frost tolerance for nasturtium:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's probably not a good idea to plant nasturtium until after the last frost because they are not cold tolerant.

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

Last Frost Date

On average the last frost is on April 15 in Algonquin. In the coldest months of winter you can expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Algonquin is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Algonquin it frosts late in the year after April 15 so just be sure to be ready to cover your nasturtium in the event of a late frost.

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.