Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Grand Forks should be read to estimate when you can plant lavender.

Planting Calendar for Lavender

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

Since lavender are one of those plants that can tolerate a little bit of cold weather you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lavender in Grand Forks 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 lavender and expect a good harvest is probably August. You probably don't want to wait any later than that or else your lavender may not have a chance to fully mature. Starting your lavender indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Grand Forks is an average and the actual date of last frost changes from year to year. Since half of the time in Grand Forks last frost occurs after May 15 be ready to cover your lavender in the event of a late frost.

USDA Zone Info for Grand Forks

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 Grand Forks

You may be interested in your other planting guides for Grand Forks.