Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Mapleton you will be able to estimate when to plant zinnia.

Planting Calendar for Zinnia

Frost tolerance for zinnia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Zinnia require warm weather which means that it's important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant zinnia in Mapleton is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant zinnia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your zinnia may not have a chance to fully mature. Starting your zinnia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Mapleton. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Mapleton is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Mapleton there is a last frost after April 15 so be sure to be ready to cover your zinnia if you have a surprise late frost.

USDA Zone Info for Mapleton

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Mapleton

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