One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when you can plant gypsophila is to use the USDA zone info for River Rouge.

Planting Calendar for Gypsophila

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

Since gypsophila are moderately cold tolerant you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant gypsophila in River Rouge 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 gypsophila and expect a good harvest is probably September. Any later than that and your gypsophila may not have a chance to fully mature. If you are starting your gypsophila indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in River Rouge. In the coldest months of winter you should expect an average low temperature of -5°F.

Since the USDA zone info for River Rouge may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in River Rouge you get surprised by a frost after April 15 be ready to cover your gypsophila in the event of one of those late frosts.

USDA Zone Info for River Rouge

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in River Rouge

You may be interested in your other planting guides for River Rouge.