How to choose the best:
Bok Choy

AKA: POK CHOY, PAK CHOY

Touch

Look for tight, firm heads that feel heavy for their size.

Avoid any heads with soft, leathery, or wilting leaves around the outside, or any soft spots.

See

Avoid heads with yellowing leaves or blacks spots, which can be signs of age or rotting, respectively.

Some more details:

How to store

Bok choy does best in a humid environment, so try wrapping in a moist cloth or paper towel before storing in a plastic bag.

When it's in season

Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.