Definition:

Dill refers to dill weed, an herb, and dill seed, a spice.

Dill weed comes from the feathery, bright green leaves of the dill plant. Dill weed has a delicate, somewhat refreshing flavor.

The small, hard, dried seeds are called dill seed. The seeds have a more dominant flavor than dill weed and a sharp, warm, slightly bitter taste.

Forms

Dill weed comes fresh or dried. Dill seed is available whole.

Substitutions

You can substitute 2 to 3 tablespoons of dill seed for 4 to 6 heads of fresh dill.
1 teaspoon dried dill = 1 tablespoon fresh dill

Q\A:

Q: What is fresh dill head?

A: A dill head is the greenish yellow, umbrella-shaped seed head of a fresh dill plant. Dill heads are available during the summer months. Pickle recipes often call for a certain number of dill heads or so many tablespoons of dill seed.