The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Sammamish should be looked at to figure out when it's the best time to plant nicotiana.

Planting Calendar for Nicotiana

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

Since nicotiana are not cold tolerant you have to wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average the last frost has passed is on March 15 in Sammamish. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Sammamish is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Sammamish last frost occurs after March 15 be ready to protect your nicotiana in the event of a late frost.

USDA Zone Info for Sammamish

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 Sammamish

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