One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant cardinal flower in Spanish Fork should be estimated by looking at 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 when the weather gets warmer.

Since cardinal flower are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant cardinal flower in Spanish Fork 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 really do well. If you are starting your cardinal flower indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Spanish Fork. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Spanish Fork is just an average the actual date of last frost is different every year. Since half of the time in Spanish Fork there is a last frost after April 15 be ready to protect your cardinal flower in the event of a late frost.

USDA Zone Info for Spanish Fork

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 Spanish Fork

You may be interested in your other planting guides for Spanish Fork.