When to Plant Bittercress in Cornelius, OR

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.

The earliest that you can plant bittercress in Cornelius can be figured out by looking at the USDA zone info.


Planting Calendar for Bittercress

Frost tolerance for bittercress: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

You can plant bittercress just a tiny bit earlier in the year because they do ok in moderate cold.

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

The earliest that you can plant bittercress in Cornelius is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant bittercress and expect a good harvest is probably August. If you wait any later than that and your bittercress may not have a chance to fully mature. You can get started a few weeks earlier by starting your bittercress indoors.

Last Frost Date

In Cornelius 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.

Since the USDA zone info for Cornelius is an average the actual date of last frost is different every year. Since half of the time in Cornelius there is a last frost after March 15 be ready to cover your bittercress in the event of a late frost.

USDA Zone Info for Cornelius

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 Low15°F
Highest Expected Low20°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 Cornelius

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