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.

The first opportunity to plant periwinkles in Bellaire can be determined by referring to the USDA zone info.

Planting Calendar for Periwinkles

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

Since periwinkles do not do well in cold weather it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant periwinkles in Bellaire 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 periwinkles and expect a good harvest is probably August. If you wait any later than that and your periwinkles may not have a chance to grow to maturity. Starting your periwinkles indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Bellaire. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Bellaire is an average the actual date of last frost changes from year to year. Since half of the time in Bellaire it frosts late in the year after April 15 be ready to protect your periwinkles if you have a late frost.

USDA Zone Info for Bellaire

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 Low	0°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 Bellaire

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