The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when you can plant bachelor buttons is to look at the USDA zone info for Astoria.

Planting Calendar for Bachelor Buttons

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

Bachelor Buttons can survive in moderate cold which tells us that you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant bachelor buttons in Astoria 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 bachelor buttons and expect a good harvest is probably September. You probably don't want to wait any later than that or else your bachelor buttons may not have a chance to fully mature. If you are starting your bachelor buttons indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Astoria the average date of last frost happens on March 15. In the coldest months of winter you should expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Astoria is just an average and the actual date of last frost is different every year. Half of the time in Astoria you get a frost after March 15 so make sure that you are prepared to protect your bachelor buttons in the event of a late frost.

USDA Zone Info for Astoria

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 Astoria

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