The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Wheat Ridge can be looked at to estimate when you can plant armeria.

Planting Calendar for Armeria

Frost tolerance for armeria:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Armeria do well in cold which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant armeria in Wheat Ridge 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 armeria and expect a good harvest is probably September. Any later than that and your armeria may not have a chance to fully mature. You can get started a little bit earlier by starting your armeria indoors.

Last Frost Date

The average date of last frost is April 15 in Wheat Ridge. It might get as low as -10°F during the coldest months of winter.

Keep in mind that USDA zone info for Wheat Ridge is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Wheat Ridge it frosts late in the year after April 15 so make sure that you are ready to protect your armeria if you have a surprise late frost.

USDA Zone Info for Wheat Ridge

Here is the info for USDA Zone 6a.

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

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Wheat Ridge

You may be interested in your other planting guides for Wheat Ridge.