The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant rosemary in Hudson can be figured out by checking out the USDA zone info.

Planting Calendar for Rosemary

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

Rosemary do ok in pretty solid cold which means that you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant rosemary in Hudson 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. Any later than that and your rosemary may not have a chance to fully mature. You can get started a few weeks earlier by starting your rosemary indoors.

Last Frost Date

The average date of last frost is May 15 in Hudson. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Hudson is an average the actual date of last frost changes from year to year. Half of the time in Hudson there is a last frost after May 15 so just be sure to be ready to cover your rosemary in the event of a late frost.

USDA Zone Info for Hudson

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 Hudson

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