One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Slatington you can estimate when it's the best time to plant canna by referring to the USDA zone info.

Planting Calendar for Canna

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

Canna do not do well in cold weather which means that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant canna in Slatington 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. You probably don't want to wait any later than that or else your canna may not have a chance to fully mature. You can get started a few weeks earlier by starting your canna indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Slatington. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Slatington is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Slatington it frosts late in the year after April 15 be ready to cover your canna if you have a surprise late frost.

USDA Zone Info for Slatington

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 Slatington

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