Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when to plant zinnia is to refer to the USDA zone info for Pleasant Grove.

Planting Calendar for Zinnia

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

Zinnia are not cold tolerant which means that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant zinnia in Pleasant Grove 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. Any later than that and your zinnia may not have a chance to grow to maturity. If you are starting your zinnia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Pleasant Grove. In the coldest months of winter you can expect an average low temperature of 10°F.

Since the USDA zone info for Pleasant Grove is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Pleasant Grove last frost occurs after March 15 be ready to protect your zinnia in the event of a late frost.

USDA Zone Info for Pleasant Grove

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Pleasant Grove

You may be interested in your other planting guides for Pleasant Grove.