Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Glen Ellyn you can figure out when it's possible to plant violas by using the USDA zone info.

Planting Calendar for Violas

Frost tolerance for violas:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant violas a lot earlier in the year because they do well in cold.

The earliest that you can plant violas in Glen Ellyn is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant violas and expect a good harvest is probably September. If you wait any later than that and your violas may not have a chance to really do well. You can get started a little bit earlier by starting your violas indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Glen Ellyn. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Glen Ellyn may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Glen Ellyn it frosts late in the year after April 15 be ready to protect your violas in the event of one of those late frosts.

USDA Zone Info for Glen Ellyn

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 Glen Ellyn

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