One of the best tools that you have as gardeners to help us figure out 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.

One way of getting a good idea when it's possible to plant pincushion flower is to look at the USDA zone info for Fort Smith.

Planting Calendar for Pincushion Flower

Frost tolerance for pincushion flower:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Pincushion Flower tend to make it in some cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant pincushion flower in Fort Smith is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant pincushion flower and expect a good harvest is probably September. Any later than that and your pincushion flower may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your pincushion flower indoors.

Last Frost Date

In Fort Smith the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of 5°F.

It's important to remember that USDA zone info for Fort Smith is just an average and the actual date of last frost will vary from year to year. Half of the time in Fort Smith there is a last frost after April 15 so just be sure to be ready to protect your pincushion flower in the event of a late frost.

USDA Zone Info for Fort Smith

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 Fort Smith

You may be interested in your other planting guides for Fort Smith.