One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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 Boone can be reffered to in order to determine when you can plant dipladenia.

Planting Calendar for Dipladenia

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

Since dipladenia are not cold tolerant you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant dipladenia in Boone 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 dipladenia and expect a good harvest is probably August. Any later than that and your dipladenia may not have a chance to fully mature. Starting your dipladenia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Boone. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Boone is just an average the actual date of last frost is different every year. Half of the time in Boone last frost occurs after April 15 so make sure that you are ready to protect your dipladenia if you have a late frost.

USDA Zone Info for Boone

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Boone

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