The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Salina can be reviewed to estimate when to plant calendula.

Planting Calendar for Calendula

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

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

The earliest that you can plant calendula in Salina 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. Any later than that and your calendula may not have a chance to really do well. You can get started a few weeks earlier by starting your calendula indoors.

Last Frost Date

The average date of last frost is April 15 in Salina. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Salina may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Salina you get surprised by a frost after April 15 so just be sure to be ready to protect your calendula if you have a surprise late frost.

USDA Zone Info for Salina

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 Salina

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