Before planting it is a good idea to find your USDA Zone info to estimate 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 referring to the USDA zone info for Gladstone it's a good idea to determine when it's a good idea to plant scabiosa.

Planting Calendar for Scabiosa

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

Scabiosa tend to make it in mild cold which tells us that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant scabiosa 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 scabiosa and expect a good harvest is probably September. Any later than that and your scabiosa may not have a chance to fully mature. You can get started a little bit earlier by starting your scabiosa indoors.

Last Frost Date

In Gladstone the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -20°F.

Always keep in mind that USDA zone info for Gladstone is not always accurate and the actual date of last frost changes from year to year. Half of the time in Gladstone there is a last frost after April 15 so always be ready to cover your scabiosa if you have one of those late frosts.

USDA Zone Info for Gladstone

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Gladstone

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