Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when it's a good idea to plant sedum is to check out the USDA zone info for Sammamish.

Planting Calendar for Sedum

Frost tolerance for sedum:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Sedum do ok in a bit of cold which means that you can plant them earlier in the year than more sensitive plants.

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

Last Frost Date

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

Remember that USDA zone info for Sammamish is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Sammamish you get a frost after March 15 so just be sure to be ready to protect your sedum if you have one of those late frosts.

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.