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

By using the USDA zone info for Duluth you will be able to determine when to plant candytuft.

Planting Calendar for Candytuft

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

Since candytuft do well in moderate cold you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant candytuft in Duluth 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 candytuft and expect a good harvest is probably August. Any later than that and your candytuft may not have a chance to really do well. If you are starting your candytuft indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Duluth. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Duluth is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Duluth it frosts late in the year after May 15 so just be sure to be ready to protect your candytuft if you have a late frost.

USDA Zone Info for Duluth

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 Duluth

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