Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Willow Springs you can determine when it's possible to plant petunias by checking out the USDA zone info.

Planting Calendar for Petunias

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

You can plant petunias slightly earlier in the year because they are barely cold tolerant.

The earliest that you can plant petunias in Willow Springs 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 petunias and expect a good harvest is probably August. If you wait any later than that and your petunias may not have a chance to really do well. You can get started a little bit earlier by starting your petunias indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Willow Springs. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Willow Springs may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Willow Springs it frosts late in the year after April 15 so make sure that you are ready to protect your petunias if you have one of those late frosts.

USDA Zone Info for Willow Springs

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 Willow Springs

You may be interested in your other planting guides for Willow Springs.