The USDA Zone info is a great tool for gardeners to help us determine 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.

By reviewing the USDA zone info for Pleasant Hill it's a good idea to estimate when it's a good idea to plant violets.

Planting Calendar for Violets

Frost tolerance for violets:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Violets can survive in mild cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant violets in Pleasant Hill 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 violets and expect a good harvest is probably September. Any later than that and your violets may not have a chance to grow to maturity. You can get started a little bit earlier by starting your violets indoors.

Last Frost Date

The average date of last frost is April 15 in Pleasant Hill. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Pleasant Hill may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Pleasant Hill last frost occurs after April 15 so always be ready to cover your violets if you have a late frost.

USDA Zone Info for Pleasant Hill

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Pleasant Hill

You may be interested in your other planting guides for Pleasant Hill.