One of the first steps you take when you are figuring out 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.

The USDA zone info for Delavan should be used to estimate when it's a good idea to plant scaevola.

Planting Calendar for Scaevola

Frost tolerance for scaevola:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since scaevola require warm weather it is necessary to wait until after the last frost before you can plant them.

The earliest that you can plant scaevola in Delavan is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant scaevola and expect a good harvest is probably August. Any later than that and your scaevola may not have a chance to really do well. You can get started a couple of weeks earlier by starting your scaevola indoors.

Last Frost Date

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

Since the USDA zone info for Delavan is just an average the actual date of last frost is different every year. Since half of the time in Delavan you get a frost after April 15 be ready to cover your scaevola in the event of one of those late frosts.

USDA Zone Info for Delavan

Here is the info for USDA Zone 5b.

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

Plants to Grow in Delavan

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