One of the first steps you take when you are figuring out your gardening schedule is find your 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 USDA zone info for Denison should be reviewed to estimate when you can plant mimulus.

Planting Calendar for Mimulus

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

Since mimulus are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant mimulus in Denison 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 mimulus and expect a good harvest is probably August. If you wait any later than that and your mimulus may not have a chance to grow to maturity. Starting your mimulus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Denison. It might get as low as 10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Denison is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Denison last frost occurs after March 15 be ready to cover your mimulus in the event of a late frost.

USDA Zone Info for Denison

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 Denison

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