One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant mecardonia in Berkeley can be determined by using the USDA zone info.

Planting Calendar for Mecardonia

Frost tolerance for mecardonia:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant mecardonia until after all chance of frost has passed because they are not cold tolerant.

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

The last month that you can plant mecardonia and expect a good harvest is probably August. Any later than that and your mecardonia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your mecardonia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Berkeley. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Berkeley may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Berkeley you get a frost after April 15 be ready to cover your mecardonia if you have a late frost.

USDA Zone Info for Berkeley

Here is the info for USDA Zone 5b.

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

Plants to Grow in Berkeley

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