The USDA Zone info is a great tool for gardeners to help us determine 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 way of figuring out when it's the best time to plant polygonums is to examine the USDA zone info for Palm Beach.

Planting Calendar for Polygonums

Frost tolerance for polygonums:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Polygonums do not do well in cold weather which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant polygonums in Palm Beach is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant polygonums and expect a good harvest is probably September. Any later than that and your polygonums may not have a chance to fully mature. You can get started a few weeks earlier by starting your polygonums indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Palm Beach. In the coldest months of winter you can expect an average low temperature of 35°F.

Since the USDA zone info for Palm Beach may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Palm Beach it frosts late in the year after January 31 so be sure to be ready to protect your polygonums in the event of a late frost.

USDA Zone Info for Palm Beach

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Palm Beach

You may be interested in your other planting guides for Palm Beach.