One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By reviewing the USDA zone info for Yorktown you will be able to estimate when it's the best time 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.

Osteospermum are moderately cold tolerant which means that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant osteospermum in Yorktown 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 grow to maturity. If you are starting your osteospermum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Yorktown. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Yorktown is an average the actual date of last frost changes from year to year. Half of the time in Yorktown it frosts late in the year after April 15 so make sure that you are prepared to cover your osteospermum in the event of a late frost.

USDA Zone Info for Yorktown

Here is the info for USDA Zone 6a.

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

Plants to Grow in Yorktown

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