The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 used to determine when you can plant digitalis.

Planting Calendar for Digitalis

Frost tolerance for digitalis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since digitalis are moderately cold tolerant you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant digitalis in Denison is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant digitalis and expect a good harvest is probably September. Any later than that and your digitalis may not have a chance to grow to maturity. Starting your digitalis indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on March 15 in Denison. In the coldest months of winter you can expect an average low temperature of 10°F.

Just be sure to remember that USDA zone info for Denison is not always accurate and the actual date of last frost is different every year. Since half of the time in Denison you get surprised by a frost after March 15 be ready to cover your digitalis if you have one of those late frosts.

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.