One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

One way of figuring out when it's the best time to plant osteospermum is to use the USDA zone info for Glenwood.

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 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 osteospermum in Glenwood 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 couple of weeks earlier by starting your osteospermum indoors.

Last Frost Date

In Glenwood the average date of last frost happens on April 15. You can expect an average low temperature of -20°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Glenwood is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Glenwood there is a last frost after April 15 so always be ready to protect your osteospermum in the event of a surprise late frost.

USDA Zone Info for Glenwood

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

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

Plants to Grow in Glenwood

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