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.

One way of estimating when it's a good idea to plant pincushion flower is to look at the USDA zone info for South Houston.

Planting Calendar for Pincushion Flower

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

Since pincushion flower are one of those plants that can tolerate a little bit of cold weather you can plant them a little earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant pincushion flower in South Houston is January. However, you really should wait until February 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 October. Any later than that and your pincushion flower may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your pincushion flower indoors.

Last Frost Date

On average the last frost has passed is on February 15 in South Houston. It might get as low as 20°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for South Houston and it is different every year. Since half of the time in South Houston you get a frost after February 15 be ready to cover your pincushion flower in the event of a surprise late frost.

USDA Zone Info for South Houston

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in South Houston

You may be interested in your other planting guides for South Houston.