One of the best tools that you have as gardeners to help us determine 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.

One way of figuring out when you can plant pentas is to refer to the USDA zone info for Glenwood.

Planting Calendar for Pentas

Frost tolerance for pentas:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since pentas are not cold tolerant you must wait until after the last frost before you can plant them.

The earliest that you can plant pentas in Glenwood 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 pentas and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pentas may not have a chance to really do well. If you are starting your pentas indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Glenwood. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Glenwood may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Glenwood it frosts late in the year after April 15 so be sure to be ready to protect your pentas in the event of one of those late frosts.

USDA Zone Info for Glenwood

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 Glenwood

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