When to Plant Sweet Potatos in Madras, OR

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

In Madras you can determine when it's a good idea to plant sweet potatos by looking at the USDA zone info.


Planting Calendar for Sweet Potatos

Frost tolerance for sweet potatos: Not tolerant of frost.
When to plant: After the last frost.

Since sweet potatos are not cold tolerant it's important to wait until after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant sweet potatos
Possibly ok, but a risky time to plant sweet potatos
Probably not a good time to plant sweet potatos

The earliest that you can plant sweet potatos in Madras 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 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 little bit earlier by starting your sweet potatos indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Madras. In the coldest months of winter you should expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Madras is just an average and the actual date of last frost will vary from year to year. Since half of the time in Madras you get surprised by a frost after April 15 be ready to protect your sweet potatos if you have a surprise late frost.

USDA Zone Info for Madras

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 Low0°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 Madras

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