Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Homer Glen you will be able to figure out when it's the best time to plant zinnia.

Planting Calendar for Zinnia

Frost tolerance for zinnia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since zinnia are not cold tolerant it is important to wait until after the last frost before you can plant them.

The earliest that you can plant zinnia in Homer Glen 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 zinnia and expect a good harvest is probably August. If you wait any later than that and your zinnia may not have a chance to really do well. You can get started a little bit earlier by starting your zinnia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Homer Glen. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Homer Glen is just an average the actual date of last frost will vary from year to year. Since half of the time in Homer Glen you get a frost after April 15 be ready to protect your zinnia in the event of a late frost.

USDA Zone Info for Homer Glen

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 Homer Glen

You may be interested in your other planting guides for Homer Glen.