How to choose the best:
Broccoli

Touch

First and foremost, look for broccoli with tight florets, that don't misshape easily when squeezed and aren’t shedding very much.

Also keep an eye out for robust and sturdy stalks, which are another signal of fresh broccoli.

See

Look for vibrant green color up the stems, which should give way to a darker and duskier shade on the florets.

Avoid any florets that seem to have black, yellow, or miscolored spots.

Smell

Avoid any heads with a strong or unpleasant smell.

Some more details:

How to store

Broccoli 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.