Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Steilacoom it's possible to determine when it's possible to plant mimulus.

Planting Calendar for Mimulus

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

You can not plant mimulus until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant mimulus in Steilacoom 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 mimulus and expect a good harvest is probably August. If you wait any later than that and your mimulus may not have a chance to fully mature. If you are starting your mimulus indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Steilacoom. It might get as low as 15°F during the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Steilacoom and it is different every year. Half of the time in Steilacoom last frost occurs after March 15 so always be ready to cover your mimulus if you have one of those late frosts.

USDA Zone Info for Steilacoom

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 Steilacoom

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