Before planting it is a good idea to find your USDA Zone info to estimate 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 using the USDA zone info for Oak Brook it's possible to figure out when it's possible to plant stocks.

Planting Calendar for Stocks

Frost tolerance for stocks:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since stocks are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant stocks in Oak Brook 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 stocks and expect a good harvest is probably August. Any later than that and your stocks may not have a chance to really do well. You can get started a few weeks earlier by starting your stocks indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Oak Brook. In the coldest months of winter you can expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Oak Brook 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 Oak Brook you get a frost after April 15 be ready to protect your stocks in the event of a surprise late frost.

USDA Zone Info for Oak Brook

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 Oak Brook

You may be interested in your other planting guides for Oak Brook.