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

By referring to the USDA zone info for Glen Ridge it's a good idea to determine when it's possible to plant cardinal flower.

Planting Calendar for Cardinal Flower

Frost tolerance for cardinal flower:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant cardinal flower until after the last frost because they do not do well in cold weather.

The earliest that you can plant cardinal flower in Glen Ridge 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 cardinal flower and expect a good harvest is probably August. If you wait any later than that and your cardinal flower may not have a chance to really do well. Starting your cardinal flower indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Glen Ridge. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Glen Ridge is an average the actual date of last frost is different every year. Since half of the time in Glen Ridge last frost occurs after April 15 be ready to cover your cardinal flower in the event of a late frost.

USDA Zone Info for Glen Ridge

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Glen Ridge

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