Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant arctotis in Petersburg can be determined by using the USDA zone info.

Planting Calendar for Arctotis

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

You can plant arctotis a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant arctotis in Petersburg 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 arctotis and expect a good harvest is probably September. If you wait any later than that and your arctotis may not have a chance to fully mature. You can get started a little bit earlier by starting your arctotis indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Petersburg. It might get as low as 5°F during the coldest months of winter.

It's important to remember that USDA zone info for Petersburg is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Petersburg you get a frost after April 15 be ready to protect your arctotis in the event of a surprise late frost.

USDA Zone Info for Petersburg

Here is the info for USDA Zone 7b.

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

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Petersburg

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