One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. 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 columbine in Roselle can be estimated by using the USDA zone info.

Planting Calendar for Columbine

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

Columbine are moderately cold tolerant which means that you can start planting them earlier than more sensitive plants.

The earliest that you can plant columbine in Roselle 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 columbine and expect a good harvest is probably September. You probably don't want to wait any later than that or else your columbine may not have a chance to grow to maturity. You can get started a little bit earlier by starting your columbine indoors.

Last Frost Date

On average the last frost is on April 15 in Roselle. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Roselle may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Roselle last frost occurs after April 15 so just be sure to be ready to cover your columbine in the event of a late frost.

USDA Zone Info for Roselle

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Roselle

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