When to Plant Gerbera in Alton, IL

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 first opportunity to plant gerbera in Alton should be determined by using the USDA zone info.


Planting Calendar for Gerbera

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

Gerbera do ok in mild cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant gerbera
Possibly ok, but a risky time to plant gerbera
Probably not a good time to plant gerbera

The earliest that you can plant gerbera in Alton 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 gerbera and expect a good harvest is probably August. You probably don't want to wait any later than that or else your gerbera may not have a chance to really do well. You can get started a few weeks earlier by starting your gerbera indoors.

Last Frost Date

The average date of last frost is April 15 in Alton. It might get as low as -10°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Alton and it is different every year. Half of the time in Alton you get surprised by a frost after April 15 so just be sure to be ready to protect your gerbera in the event of one of those late frosts.

USDA Zone Info for Alton

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 Alton

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