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.

In Park Ridge you can estimate when it's the best time to plant arabis by reviewing the USDA zone info.

Planting Calendar for Arabis

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

Arabis tend to make it in a bit of cold which tells us that you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant arabis in Park Ridge 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 arabis and expect a good harvest is probably September. If you wait any later than that and your arabis may not have a chance to fully mature. If you are starting your arabis indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Park Ridge. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Park Ridge may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Park Ridge you get surprised by a frost after April 15 so be sure to be ready to protect your arabis in the event of a surprise late frost.

USDA Zone Info for Park Ridge

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 Park Ridge

You may be interested in your other planting guides for Park Ridge.