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.

The best time to plant dahlia in Bonney Lake can be figured out by referring to the USDA zone info.

Planting Calendar for Dahlia

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

It's not a good idea to plant dahlia until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant dahlia 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 dahlia and expect a good harvest is probably August. If you wait any later than that and your dahlia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your dahlia indoors.

Last Frost Date

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

Since the USDA zone info for Bonney Lake is just an average the actual date of last frost will vary from year to year. Half of the time in Bonney Lake it frosts late in the year after March 15 so be sure to be ready to cover your dahlia if you have a surprise late frost.

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.