The USDA Zone info is a great tool for gardeners to help us estimate 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.

By referring to the USDA zone info for Schuylkill Haven you will be able to estimate when you can plant osteospermum.

Planting Calendar for Osteospermum

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

Since osteospermum are moderately cold tolerant you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant osteospermum in Schuylkill Haven 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. If you wait any later than that and your osteospermum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your osteospermum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Schuylkill Haven. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Schuylkill Haven may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Schuylkill Haven there is a last frost after April 15 so be sure to be ready to cover your osteospermum in the event of a late frost.

USDA Zone Info for Schuylkill Haven

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Schuylkill Haven

You may be interested in your other planting guides for Schuylkill Haven.