One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

A common way of determining when it's possible to plant pentas is to refer to the USDA zone info for Lynnwood.

Planting Calendar for Pentas

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

Since pentas require warm weather it is necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant pentas in Lynnwood 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. If you wait any later than that and your pentas may not have a chance to really do well. Starting your pentas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Lynnwood the average date of last frost happens on March 15. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Lynnwood is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Lynnwood you get surprised by a frost after March 15 be ready to protect your pentas if you have a surprise late frost.

USDA Zone Info for Lynnwood

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 Lynnwood

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