One of the best tools that you have as gardeners to help us determine 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.

In South Haven you can estimate when it's the best time to plant strawflowers by reviewing the USDA zone info.

Planting Calendar for Strawflowers

Frost tolerance for strawflowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant strawflowers a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant strawflowers in South Haven is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant strawflowers and expect a good harvest is probably August. Any later than that and your strawflowers may not have a chance to fully mature. Starting your strawflowers indoors is a great way to get them started a little bit earlier.

Last Frost Date

In South Haven the average date of last frost happens on April 15. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for South Haven is an average the actual date of last frost will vary from year to year. Half of the time in South Haven there is a last frost after April 15 so make sure that you are prepared to cover your strawflowers in the event of one of those late frosts.

USDA Zone Info for South 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 South Haven

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