One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Gladstone you can estimate when it's the best time to plant coreopsis by reviewing the USDA zone info.

Planting Calendar for Coreopsis

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

Coreopsis can survive in some cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant coreopsis in Gladstone 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 coreopsis and expect a good harvest is probably September. If you wait any later than that and your coreopsis may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your coreopsis indoors.

Last Frost Date

On average the last frost is on March 15 in Gladstone. You can expect an average low temperature of 15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Gladstone is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Gladstone last frost occurs after March 15 be ready to cover your coreopsis if you have a surprise late frost.

USDA Zone Info for Gladstone

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 Gladstone

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