The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant geum in Columbiana should be figured out by referring to the USDA zone info.

Planting Calendar for Geum

Frost tolerance for geum:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Geum are barely cold tolerant which means that you can plant them slightly earlier than more sensitive plants.

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

The last month that you can plant geum and expect a good harvest is probably August. Any later than that and your geum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your geum indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Columbiana. It might get as low as -10°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Columbiana and it can change quite a bit from year to year. Half of the time in Columbiana last frost occurs after April 15 so make sure that you are prepared to cover your geum in the event of a surprise late frost.

USDA Zone Info for Columbiana

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Columbiana

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