One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when you can plant angelonia in Algonquin by reviewing the USDA zone info.

Planting Calendar for Angelonia

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

Angelonia are barely cold tolerant which means that you can start planting them slightly earlier than more sensitive plants.

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

Last Frost Date

The average date of last frost is April 15 in Algonquin. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Algonquin is just an average the actual date of last frost will vary from year to year. Half of the time in Algonquin last frost occurs after April 15 so make sure that you are prepared to cover your angelonia 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.