One of the first steps you take when you are figuring out 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 common way of figuring out when to plant rosemary is to check out the USDA zone info for Hutchinson.

Planting Calendar for Rosemary

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

Since rosemary do well in cold you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant rosemary in Hutchinson 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 rosemary and expect a good harvest is probably August. If you wait any later than that and your rosemary may not have a chance to fully mature. If you are starting your rosemary indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Hutchinson. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Hutchinson is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Hutchinson you get a frost after May 15 be ready to cover your rosemary if you have a late frost.

USDA Zone Info for Hutchinson

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Hutchinson

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