Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant cardinal flower in Hatboro should be estimated by using the USDA zone info.

Planting Calendar for Cardinal Flower

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

It's a bad idea to plant cardinal flower until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant cardinal flower in Hatboro 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. Any later than that and your cardinal flower may not have a chance to fully mature. If you are starting your cardinal flower indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Hatboro the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Hatboro is an average the actual date of last frost will vary from year to year. Since half of the time in Hatboro you get surprised by a frost after April 15 be ready to cover your cardinal flower if you have a surprise late frost.

USDA Zone Info for Hatboro

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 Hatboro

You may be interested in your other planting guides for Hatboro.