Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Bonney Lake you can figure out when to plant dahlias by looking at the USDA zone info.

Planting Calendar for Dahlias

Frost tolerance for dahlias:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since dahlias require warm weather you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant dahlias in Bonney Lake 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 dahlias and expect a good harvest is probably August. Any later than that and your dahlias may not have a chance to grow to maturity. If you are starting your dahlias indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on March 15 in Bonney Lake. You can expect an average low temperature of 15°F in the coldest months of winter.

It's important to remember that USDA zone info for Bonney Lake is not always accurate and the actual date of last frost is different every year. Since half of the time in Bonney Lake you get surprised by a frost after March 15 be ready to cover your dahlias if you have one of those late frosts.

USDA Zone Info for Bonney Lake

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 Bonney Lake

You may be interested in your other planting guides for Bonney Lake.