One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Marseilles you can figure out when it's possible to plant blue lace flowers by referring to the USDA zone info.

Planting Calendar for Blue Lace Flowers

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

Blue Lace Flowers do ok in moderate cold which means that you can start planting them slightly earlier than other frost tender plants.

The earliest that you can plant blue lace flowers in Marseilles 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 blue lace flowers and expect a good harvest is probably August. Any later than that and your blue lace flowers may not have a chance to fully mature. Starting your blue lace flowers indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Marseilles. In the coldest months of winter you should expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Marseilles is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Marseilles there is a last frost after April 15 so be sure to be ready to cover your blue lace flowers if you have one of those late frosts.

USDA Zone Info for Marseilles

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 Marseilles

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