When can I plant Pyrethrum in Zone 6a

Before planting it is a good idea to find our USDA Zone info to figure out our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The USDA zone info for Zone 6a should be reviewed to determine when it's possible to plant pyrethrum.


Planting Calendar for Pyrethrum

Frost tolerance for pyrethrum: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

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

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

The earliest that you can plant pyrethrum in Zone 6a 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 pyrethrum and expect a good harvest is probably September. Any later than that and your pyrethrum may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your pyrethrum indoors.

Last Frost Date

In Zone 6a the average date of last frost happens on April 15. In the coldest months of winter we can expect an average low temperature of -10°F.

Since the USDA zone info for Zone 6a is not always accurate our actual date of last frost changes from year to year. Since half of the time in Zone 6a it frosts late in the year after April 15 be ready to cover your pyrethrum in the event of a late frost.

USDA Zone Info for Zone 6a

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-10°F
Highest Expected Low-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Zone 6a

You may be interested in our other planting guides for Zone 6a.