One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

One way of making a decision about when to plant rosemary is to examine the USDA zone info for Geneva.

Planting Calendar for Rosemary

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

Rosemary are very cold tolerant which means that you can get them planted much earlier than more sensitive plants.

The earliest that you can plant rosemary in Geneva 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 rosemary and expect a good harvest is probably September. If you wait any later than that and your rosemary may not have a chance to grow to maturity. If you are starting your rosemary indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Geneva. You can expect an average low temperature of -10°F in the coldest months of winter.

Always keep in mind that USDA zone info for Geneva is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Geneva you get a frost after April 15 be ready to cover your rosemary if you have one of those late frosts.

USDA Zone Info for Geneva

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Geneva

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