The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant dill in Mercer Island can be figured out by referring to the USDA zone info.

Planting Calendar for Dill

Frost tolerance for dill:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since dill are barely cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant dill in Mercer Island is March. However, you really should wait until April if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is March 15 in Mercer Island. In the coldest months of winter you can expect an average low temperature of 15°F.

Just be sure to remember that USDA zone info for Mercer Island is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Mercer Island it frosts late in the year after March 15 be ready to cover your dill if you have a surprise late frost.

USDA Zone Info for Mercer Island

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 Mercer Island

You may be interested in your other planting guides for Mercer Island.