Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Delano you can estimate when you can plant sweet potatos by checking out the USDA zone info.

Planting Calendar for Sweet Potatos

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

Since sweet potatos are not cold tolerant it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant sweet potatos in Delano 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 sweet potatos and expect a good harvest is probably August. Any later than that and your sweet potatos may not have a chance to really do well. You can get started a few weeks earlier by starting your sweet potatos indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Delano is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Delano you get a frost after May 15 be ready to cover your sweet potatos if you have a surprise late frost.

USDA Zone Info for Delano

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 Delano

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