When to Plant Dusty Miller in Swarthmore, PA

One of the first steps you take when you are estimating 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.

The first chance to plant dusty miller in Swarthmore should be estimated by reviewing the USDA zone info.


Planting Calendar for Dusty Miller

Frost tolerance for dusty miller: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Dusty Miller do well in cold which means that you can plant them much earlier than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant dusty miller
Possibly ok, but a risky time to plant dusty miller
Probably not a good time to plant dusty miller

The earliest that you can plant dusty miller in Swarthmore 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 dusty miller and expect a good harvest is probably September. If you wait any later than that and your dusty miller may not have a chance to fully mature. You can get started a little bit earlier by starting your dusty miller indoors.

Last Frost Date

In Swarthmore the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of 0°F.

Since the USDA zone info for Swarthmore may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Swarthmore you get surprised by a frost after April 15 so just be sure to be ready to protect your dusty miller in the event of a late frost.

USDA Zone Info for Swarthmore

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 Low0°F
Highest Expected Low5°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 Swarthmore

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