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.

You will be able to estimate when it's a good idea to plant impatiens by using the USDA zone info for Marysville.

Planting Calendar for Impatiens

Frost tolerance for impatiens:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Impatiens require warm weather which tells us that you really should wait until it warms up after the last frost before you can plant them.

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

Last Frost Date

In Marysville the average date of last frost happens on March 15. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Marysville is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Marysville it frosts late in the year after March 15 be ready to cover your impatiens in the event of one of those late frosts.

USDA Zone Info for Marysville

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 Marysville

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