Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Stuttgart you can estimate when it's a good idea to plant osteospermum by referring to the USDA zone info.

Planting Calendar for Osteospermum

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

Osteospermum do well in mild cold which tells us that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant osteospermum in Stuttgart 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 osteospermum and expect a good harvest is probably September. Any later than that and your osteospermum may not have a chance to grow to maturity. You can get started a little bit earlier by starting your osteospermum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Stuttgart. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Stuttgart is an average the actual date of last frost changes from year to year. Since half of the time in Stuttgart last frost occurs after March 15 be ready to cover your osteospermum in the event of a late frost.

USDA Zone Info for Stuttgart

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Stuttgart

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