The USDA Zone info is a great tool for gardeners to help us figure out 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.

One way of determining when to plant rosemary is to consult the USDA zone info for Whiteland.

Planting Calendar for Rosemary

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

You can plant rosemary earlier in the year because they do well in cold.

The earliest that you can plant rosemary in Whiteland 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. 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 little bit earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Whiteland is just an average and the actual date of last frost is different every year. Half of the time in Whiteland you get surprised by a frost after April 15 so make sure that you are ready to cover your rosemary in the event of one of those late frosts.

USDA Zone Info for Whiteland

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 Whiteland

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