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 Gaithersburg it's possible to estimate when you can plant bachelor buttons.

Planting Calendar for Bachelor Buttons

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

You can plant bachelor buttons a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant bachelor buttons in Gaithersburg 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 really do well. If you are starting your bachelor buttons indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Gaithersburg. It might get as low as 0°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Gaithersburg and it changes from year to year. Half of the time in Gaithersburg it frosts late in the year after April 15 so always be ready to protect your bachelor buttons if you have one of those late frosts.

USDA Zone Info for Gaithersburg

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Gaithersburg

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