Jefferson Seed Library

Dill

Often used in pickling, dill is a versatile herb that can flavor many kinds of dishes. It is also good for more than its culinary value! Dill makes a good trap crop and companion plant. It is also one of the host plants for the black swallowtail butterfly.

  • Variety

Dukat; Long Island Mammoth; Mammoth

  • Scientific Name
Anethum graveolens
  • Growing Level
Easy
  • Seed Saving Level
Intermediate
  • Seed Storage
3 years if properly stored
  • Life Cycle
Annual
  • Germination Time
10-21 days
  • Height

Dukat: 6′

Long Island Mammoth: 4-6′

Mammoth: 36”

  • Light Requirements
Full sun
  • Days to Harvest
40-60 days
  • “Check Out” Month See Upcoming Events for specific “check out” dates.
April and May
  • In Stock?

Out of Stock: Long Is. Mammoth

Yes for the rest

 

Dill

Growing Tips

Host Plant
Container Friendly

12+” deep container

Companion Plant

When to Start

Spring: Direct sow after all danger of frost has passed and when temperatures are above 60F.

 

How to Start

 

Direct sow shallowly in well-draining soil, where it can get full sun after all danger of frost has passed. Thin to 4-8 inches. Dill grows a long taproot. If you are growing in a container make sure it is at least 12” deep. Any shallower and there won’t be enough room for the roots. 

Care

 

Bottom water with a soaker hose or drip irrigation to prevent diseases like downy and powdery mildew. Dill is also susceptible to being blown over in high winds. Plant it in an area that is protected from the wind. Keep the soil moist but not soggy, give around 1 inch of water a week. Use mulch to suppress weeds and retain soil moisture. Examine the plants daily for caterpillars, especially if dill is being used as a trap crop or companion plant. Caterpillars can decimate plants very quickly. Pick off caterpillars by hand.

 

Harvest

 

Dill will start to change flavor once it flowers. Harvest leaves before flowers form. Harvest the seeds just like you would for seed saving. See below.

 

Pest Control

 

Tomato hornworms are one of the pests that really enjoy dill. If you plant tomatoes and peppers, consider using dill as a trap crop to help control tomato hornworms. Learn more through “Trap Cropping”, the link is below. Dill also makes a good companion plant as it attracts beneficial predators like lacewings, hoverflies, and ladybugs that will eat aphids. These are just some of the beneficial predators dill attracts that will help you with pest problems. Learn more through “Companion Planting”, the link is below.

 

Host Plant

The black swallowtail butterfly lay eggs on several host plants. These plants are what the caterpillars feed on until they transform into butterflies. Some of the host plants of the black swallowtail butterfly are Golden Alexander (Zizia aurea), the Parsley family (Dill, Fennel, Carrot, Common Rue), and the tulip tree. When using dill as a host plant, plant a good amount as the caterpillars will eat a lot. 

How to use

Dill leaves add delicious flavor to both potato and cucumber salads. It is good on fried eggs and in Greek cuisine. The seeds are used in pickling.

Pro Tip!

Incompatibles: Carrot and tomato

Grows well with: All brassicas (kale, broccoli, etc.)

Seed Saving

Dill will Cross with Fennel

Isolation Distance

 

Dill is insect-pollinated and different varieties may cross unless separated by one mile.

 

Instructions

 

Harvest individual heads as they dry on the plants since they ripen over a period of time.

Once pods or husks have been harvested, store them in a dry place and wait until they are thoroughly dry. When the pods or husks are dry enough they will easily crumble between your hands. Crumble the pods or husks until all the seeds are released.

Seeds and finer chaff are easy to separate by a variety of methods. One way is to use two screens of varying mesh, one a little smaller than the seeds and the other a little larger. The first screen lets anything smaller than the seeds fall through, and the second lets the seeds through and stops anything larger.

Features

  • Culinary
  • Mammoth dill is good for pickling and flavoring various dishes
  • Trap Crop
  • Companion plant
  • Host Plant
  • Container friendly
  • Dukat: More fragrant and flavorful than other varieties. Scandinavian heirloom. Excellent for pickling. 
  • Long Island Mammoth: Heirloom. The standard variety for flavoring pickles, soups, breads, stews, salads, and sauces
  • Mammoth: Heirloom. Excellent for brightening salads, soups, omelets and vegetables.

  • Dill doesn’t transplant well.
  • Dill will cross with Fennel.
  • Keep dill away from carrots. 
  • It grows well next to onions and cabbage. 

You May Also Like: 

Drying Herbs

Companion Planting: How to use flowers to help control pests.

Trap cropping: How to keep pests out of your main crop.

How to Preserve the Harvest Safely

Pickles Recipe

Fennel (Host Plant)

Sources:

Gardeningknowhow.com

Amanac.com

Burpee.com

The New York Botanical Garden, Herbal Handbook, Clarkson Potter.