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 USDA zone info for Alexandria should be read to determine when it's a good idea to plant osteospermum.

Planting Calendar for Osteospermum

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

You can plant osteospermum a little bit earlier in the year because they do well in moderate cold.

The earliest that you can plant osteospermum in Alexandria 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. You probably don't want to wait any later than that or else your osteospermum may not have a chance to really do well. If you are starting your osteospermum indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Alexandria. You should expect an average low temperature of 15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Alexandria is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Alexandria you get surprised by a frost after March 15 so always be ready to protect your osteospermum if you have one of those late frosts.

USDA Zone Info for Alexandria

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Alexandria

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