One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant snow-in summer in Winnetka should be figured out by reviewing the USDA zone info.

Planting Calendar for Snow-in Summer

Frost tolerance for snow-in summer:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Snow-in Summer can survive in mild cold which tells us that you can plant them a little bit earlier in the year than other frost tender plants.

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

Last Frost Date

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

Remember that USDA zone info for Winnetka may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Winnetka there is a last frost after April 15 be ready to cover your snow-in summer if you have a late frost.

USDA Zone Info for Winnetka

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 Winnetka

You may be interested in your other planting guides for Winnetka.