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 first chance to plant cardinal flower in Greenfield should be estimated by reviewing 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 has passed.

You really shouldn't plant cardinal flower until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant cardinal flower in Greenfield is March. However, you really should wait until April 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 September. If you wait any later than that and your cardinal flower may not have a chance to grow to maturity. Starting your cardinal flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Greenfield. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Greenfield may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Greenfield it frosts late in the year after February 15 be ready to protect your cardinal flower in the event of one of those late frosts.

USDA Zone Info for Greenfield

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Greenfield

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