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.

A way of figuring out when you can plant plectranthus is to use the USDA zone info for Kirkland.

Planting Calendar for Plectranthus

Frost tolerance for plectranthus:	Not tolerant of frost.
When to plant:	After the last frost.

Since plectranthus require warm weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant plectranthus in Kirkland 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 plectranthus and expect a good harvest is probably August. Any later than that and your plectranthus may not have a chance to really do well. Starting your plectranthus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Kirkland is just an average and the actual date of last frost is different every year. Half of the time in Kirkland last frost occurs after March 15 so make sure that you are ready to cover your plectranthus in the event of a late frost.

USDA Zone Info for Kirkland

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 Kirkland

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