One of the best tools that you have as gardeners to help us estimate 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 Bothell you can figure out when it's possible to plant artichokes by reviewing the USDA zone info.

Planting Calendar for Artichokes

Frost tolerance for artichokes:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since artichokes are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant artichokes in Bothell is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant artichokes and expect a good harvest is probably September. You probably don't want to wait any later than that or else your artichokes may not have a chance to grow to maturity. Starting your artichokes indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Bothell is just an average the actual date of last frost is different every year. Half of the time in Bothell you get surprised by a frost after March 15 so just be sure to be ready to protect your artichokes in the event of a late frost.

USDA Zone Info for Bothell

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 Bothell

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