The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of getting a good idea when it's the best time to plant cardinal flower is to check out the USDA zone info for Bellaire.

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.

Since cardinal flower are not cold tolerant you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant cardinal flower in Bellaire 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. If you are starting your cardinal flower indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Bellaire. In the coldest months of winter you should expect an average low temperature of -5°F.

Keep in mind that USDA zone info for Bellaire is just an average and the actual date of last frost is different every year. Since half of the time in Bellaire last frost occurs after April 15 be ready to protect your cardinal flower if you have one of those late frosts.

USDA Zone Info for Bellaire

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Bellaire

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