The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Prospect Heights you will be able to figure out when it's a good idea to plant maltese cross.

Planting Calendar for Maltese Cross

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

Since maltese cross do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant maltese cross in Prospect Heights 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 maltese cross and expect a good harvest is probably September. You probably don't want to wait any later than that or else your maltese cross may not have a chance to really do well. Starting your maltese cross indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Remember that USDA zone info for Prospect Heights may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Prospect Heights last frost occurs after April 15 so just be sure to be ready to protect your maltese cross if you have a surprise late frost.

USDA Zone Info for Prospect Heights

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 Prospect Heights

You may be interested in your other planting guides for Prospect Heights.