One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when it's possible to plant portulaca is to look at the USDA zone info for Winfield.

Planting Calendar for Portulaca

Frost tolerance for portulaca:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You should not plant portulaca until after the last frost because they are not cold tolerant.

The earliest that you can plant portulaca in Winfield 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 portulaca and expect a good harvest is probably August. You probably don't want to wait any later than that or else your portulaca may not have a chance to fully mature. If you are starting your portulaca indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Winfield. You can expect an average low temperature of 5°F in the coldest months of winter.

Remember that USDA zone info for Winfield is an average and the actual date of last frost is different every year. Half of the time in Winfield it frosts late in the year after April 15 so just be sure to be ready to protect your portulaca in the event of a surprise late frost.

USDA Zone Info for Winfield

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Winfield

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