When to Plant Larkspur in Canonsburg, PA

Before planting it is a good idea to find your USDA Zone info to determine 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.

The USDA zone info for Canonsburg should be looked at to estimate when to plant larkspur.


Planting Calendar for Larkspur

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

Since larkspur are very cold tolerant you can plant them much earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant larkspur in Canonsburg 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 larkspur and expect a good harvest is probably September. Any later than that and your larkspur may not have a chance to really do well. You can get started a few weeks earlier by starting your larkspur indoors.

Last Frost Date

The average date of last frost is April 15 in Canonsburg. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Canonsburg is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Canonsburg you get a frost after April 15 so be sure to be ready to protect your larkspur in the event of a surprise late frost.

USDA Zone Info for Canonsburg

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 Canonsburg

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