The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of figuring out when it's possible to plant arctotis is to refer to the USDA zone info for Park Ridge.

Planting Calendar for Arctotis

Frost tolerance for arctotis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Arctotis do well in moderate cold which tells us that you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant arctotis 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 arctotis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your arctotis may not have a chance to grow to maturity. If you are starting your arctotis indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Park Ridge the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -15°F.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Park Ridge and it changes from year to year. Since half of the time in Park Ridge there is a last frost after April 15 be ready to cover your arctotis 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.