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 Stanwood you can figure out when it's possible to plant pentas by looking at the USDA zone info.

Planting Calendar for Pentas

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

It's probably a bad idea to plant pentas until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant pentas in Stanwood 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 pentas and expect a good harvest is probably August. Any later than that and your pentas may not have a chance to fully mature. Starting your pentas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Stanwood. It might get as low as 15°F during the coldest months of winter.

Keep in mind that USDA zone info for Stanwood is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Stanwood it frosts late in the year after March 15 be ready to cover your pentas if you have a surprise late frost.

USDA Zone Info for Stanwood

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Stanwood

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