One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Orem should be looked at to figure out when it's the best time to plant dahlia.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You should not plant dahlia until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant dahlia in Orem 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 dahlia and expect a good harvest is probably August. If you wait any later than that and your dahlia may not have a chance to really do well. Starting your dahlia indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Orem. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Orem is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Orem it frosts late in the year after April 15 so always be ready to cover your dahlia if you have a surprise late frost.

USDA Zone Info for Orem

Here is the info for USDA Zone 7a.

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

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Orem

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