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

In Johnston you can figure out when it's the best time to plant african daisy by referring to the USDA zone info.

Planting Calendar for African Daisy

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

African Daisy are moderately cold tolerant which means that you can get them planted earlier than other frost tender plants.

The earliest that you can plant african daisy in Johnston 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 african daisy and expect a good harvest is probably September. If you wait any later than that and your african daisy may not have a chance to grow to maturity. Starting your african daisy indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Johnston the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -20°F.

Since the USDA zone info for Johnston may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Johnston it frosts late in the year after April 15 so just be sure to be ready to cover your african daisy if you have one of those late frosts.

USDA Zone Info for Johnston

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 Johnston

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