One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant argyranthemum in Lake Forest can be determined by using the USDA zone info.

Planting Calendar for Argyranthemum

Frost tolerance for argyranthemum:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since argyranthemum do not do well in cold weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant argyranthemum in Lake Forest 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 argyranthemum and expect a good harvest is probably August. Any later than that and your argyranthemum may not have a chance to fully mature. You can get started a little bit earlier by starting your argyranthemum indoors.

Last Frost Date

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

Since the USDA zone info for Lake Forest is an average the actual date of last frost changes from year to year. Half of the time in Lake Forest last frost occurs after April 15 so always be ready to cover your argyranthemum in the event of a surprise late frost.

USDA Zone Info for Lake Forest

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 Lake Forest

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