There is no set number of stalks. "A head of celery" is as the way celery is grown, harvested, and sold in much the same way as "a potato" or "an apple" or "a globe artichoke".
A bunch or "head" of celery consists of approximately a dozen or so individual ribs also called stalks.
About 3/4 teaspoon of dill seed equals and average head of dill
The rate of substitution for dill head to a sprig of dill depends on the specific culinary context and desired flavor intensity. Generally, a dill head, which contains numerous seeds and flowers, can provide a stronger and more concentrated flavor compared to a single sprig. As a rough guideline, one dill head may be roughly equivalent to about 3-4 sprigs of dill, but adjustments can be made based on personal taste preferences and the dish being prepared.
A dill head refers to the flowering part of the dill plant, which is often used in cooking for its aromatic flavor. The head contains numerous tiny yellow flowers that can produce seeds, which are also used as a spice. In culinary contexts, dill heads are commonly used to flavor pickles, salads, and various dishes. Additionally, they can be used to make herbal teas or as a garnish.
When using dill, you will find that both the feathery leaves and the flower heads can be used. Most often the flower heads are allowed to mature and harvested as dill seed. I usually get about a tablespoon of dried dill seed per plant (plants often have more than one seed head). I also dry the leaves, and because they are so fine I don't get much dried dill (1 -3 tablespoons per plant) from each plant.
One head of fresh dill typically weighs around 1 ounce, which is equivalent to about 3 tablespoons of chopped fresh dill. When dried, herbs lose much of their volume, so you would need to use approximately 1 tablespoon of dried dill weed to substitute for 3 tablespoons of fresh dill. Keep in mind that dried herbs have a more concentrated flavor, so adjust the amount to taste.
Typically, about 4-5 sprigs of dill are equivalent to one head of dill. However, this can vary based on the size of the sprigs and the specific recipe you're following.
Use one full head of fresh dill (it looks a bit like a starburst) per quart jar.
What is the dry equivalent to a head of dill?
In the US, when dill is grown as a farm crop, they are usually harvested with a combine harvester. The cylinder speed and fan speed must both be turned way down, due to the lightness and fragility of the seed. To hand harvest some dill seed from your garden dill plants, you can just wait until the seed gets dry enough to be pulled off the seed head relatively easily and just "rake" the seed head through your fingers, palm up to catch the seed. Have a bag or other container handy to put the seed in, and you can have a lot of seed gathered up in just a few minutes.
You Take the seeds out :)
A seed head is the pod on the end of a stem containing seeds.
The number of dill heads that equal a dill stalk can vary depending on the size of the stalk and the number of heads it produces. Typically, a single dill stalk may produce several heads, often ranging from 3 to 10 or more. However, for culinary purposes, a common guideline is to use one dill head per stalk when measuring for recipes. Ultimately, the exact ratio can depend on individual preferences and specific usage.