One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when to plant sanvitalia by reviewing the USDA zone info for Duluth.

Planting Calendar for Sanvitalia

Frost tolerance for sanvitalia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sanvitalia do ok in some cold which means that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant sanvitalia 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 sanvitalia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sanvitalia may not have a chance to really do well. You can get started a few weeks earlier by starting your sanvitalia indoors.

Last Frost Date

The average date of last frost is April 15 in Duluth. In the coldest months of winter you can expect an average low temperature of 5°F.

Remember that USDA zone info for Duluth may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Duluth there is a last frost after April 15 so be sure to be ready to protect your sanvitalia in the event of one of those late frosts.

USDA Zone Info for Duluth

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Duluth

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