One of the best tools that you have as gardeners to help us figure out 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.

In Island Lake you can figure out when it's a good idea to plant angelonia 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 do well in some cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant angelonia in Island Lake 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. You probably don't want to wait any later than that or else your angelonia may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your angelonia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Island Lake. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Island Lake may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Island Lake you get a frost after April 15 be ready to cover your angelonia if you have one of those late frosts.

USDA Zone Info for Island Lake

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 Island Lake

You may be interested in your other planting guides for Island Lake.