One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

You will be able to figure out when it's a good idea to plant canna by checking out the USDA zone info for Norfolk.

Planting Calendar for Canna

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

You really shouldn't plant canna until after the last frost has passed because they require warm weather.

The earliest that you can plant canna in Norfolk 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 canna and expect a good harvest is probably August. If you wait any later than that and your canna may not have a chance to fully mature. If you are starting your canna indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Norfolk. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Norfolk may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Norfolk it frosts late in the year after March 15 so always be ready to cover your canna in the event of a surprise late frost.

USDA Zone Info for Norfolk

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Norfolk

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