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.

The earliest that you can plant calendula in Saginaw can be figured out by using the USDA zone info.

Planting Calendar for Calendula

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

Since calendula do well in moderate cold you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant calendula in Saginaw is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant calendula and expect a good harvest is probably September. You probably don't want to wait any later than that or else your calendula may not have a chance to really do well. You can get started a little bit earlier by starting your calendula indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Saginaw. You can expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Saginaw is an average and the actual date of last frost is different every year. Half of the time in Saginaw you get surprised by a frost after April 15 so just be sure to be ready to protect your calendula if you have a late frost.

USDA Zone Info for Saginaw

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Saginaw

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