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.

It's possible to figure out when to plant hamburg root parsley by reviewing the USDA zone info for Williston.

Planting Calendar for Hamburg root parsley

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

You can plant hamburg root parsley a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant hamburg root parsley in Williston 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 hamburg root parsley and expect a good harvest is probably August. If you wait any later than that and your hamburg root parsley may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your hamburg root parsley indoors.

Last Frost Date

The average date of last frost is May 15 in Williston. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Williston may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Williston last frost occurs after May 15 so be sure to be ready to protect your hamburg root parsley in the event of a surprise late frost.

USDA Zone Info for Williston

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Williston

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