When to Plant Gerbera in Denison, IA

One of the first steps you take when you are making a decision about 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 gerbera in Denison can be estimated 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.

Since gerbera are barely cold tolerant you can plant them a bit earlier in the year than more sensitive 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 Denison 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. Any later than that and your gerbera may not have a chance to really do well. Starting your gerbera indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Denison. It might get as low as -20°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 Denison and it is different every year. Half of the time in Denison there is a last frost after April 15 so always be ready to cover your gerbera if you have one of those late frosts.

USDA Zone Info for Denison

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 Denison

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