One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when it's the best time to plant bittercress is to consult the USDA zone info for Montclair.

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.

Bittercress are barely cold tolerant which tells us that you can plant them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant bittercress in Montclair 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 bittercress and expect a good harvest is probably September. Any later than that and your bittercress may not have a chance to fully mature. If you are starting your bittercress indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Montclair the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Since the USDA zone info for Montclair is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Montclair it frosts late in the year after January 31 be ready to cover your bittercress in the event of a late frost.

USDA Zone Info for Montclair

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Montclair

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