Before planting it is a good idea to find your USDA Zone info to estimate 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.

You can figure out when it's a good idea to plant mimulus in Zionsville by reviewing the USDA zone info.

Planting Calendar for Mimulus

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

You can not plant mimulus until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant mimulus in Zionsville 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. You can get started a little bit earlier by starting your mimulus indoors.

Last Frost Date

On average the last frost is on April 15 in Zionsville. You should expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Zionsville is just an average and the actual date of last frost will vary from year to year. Since half of the time in Zionsville it frosts late in the year after April 15 be ready to protect your mimulus if you have one of those late frosts.

USDA Zone Info for Zionsville

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Zionsville

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