Before planting it is a good idea to find your USDA Zone info to figure out 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.

You can estimate when it's possible to plant pincushion flower in Zone 1a by checking out the USDA zone info.

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 just a bit earlier in the year than more sensitive plants.

The earliest that you can plant pincushion flower in Zone 1a is May. However, you really should wait until June 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 July. 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

In Zone 1a the average date of last frost happens on June 15. In the coldest months of winter you can expect an average low temperature of -60°F.

Since the USDA zone info for Zone 1a is an average the actual date of last frost is different every year. Since half of the time in Zone 1a it frosts late in the year after June 15 be ready to cover your pincushion flower in the event of one of those late frosts.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)	June 15
Average Date of First Frost (fall)	July 15
Lowest Expected Low	-60°F
Highest Expected Low	-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in your other planting guides for Zone 1a.