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

You should be able to determine when to plant pampas grass by checking out the USDA zone info for Winona.

Planting Calendar for Pampas Grass

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

Since pampas grass are not cold tolerant you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant pampas grass in Winona is May. However, you really should wait until June if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is May 15 in Winona. You should expect an average low temperature of -25°F in the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Winona and it is different every year. Half of the time in Winona last frost occurs after May 15 so make sure that you are prepared to cover your pampas grass if you have a late frost.

USDA Zone Info for Winona

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Winona

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