One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. 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 Renton should be reffered to in order to estimate when it's the best time to plant crassula.

Planting Calendar for Crassula

Frost tolerance for crassula:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since crassula require warm weather you have to wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average the last frost has passed is on March 15 in Renton. It might get as low as 15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Renton is just an average and the actual date of last frost changes from year to year. Since half of the time in Renton there is a last frost after March 15 be ready to protect your crassula if you have one of those late frosts.

USDA Zone Info for Renton

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 Renton

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