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Dill Mammoth

Dill Mammoth

Anethum graveolens

herb

Dill Mammoth is a vigorous cultivar of common dill known for its tall, robust growth reaching 3-4 feet, making it ideal for cut flowers and seed production. This variety features feathery, finely divided blue-green foliage and produces abundant small yellow flowers that develop into flavorful seeds. It's a cool-season annual that thrives in temperate climates and is prized by gardeners for both culinary use and ornamental appeal.

Growing Conditions

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Sun: Full sun, 6-8 hours daily
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Water: Moderate watering; keep soil consistently moist but not waterlogged. Allow soil to dry slightly between waterings. Reduce watering as plant matures.
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Spacing: 12 inches
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Days to maturity: 70-90 days for seed production; 40-50 days for leaf harvest
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Planting depth: 0.25

Soil

Type: Well-draining loamy to sandy soil
pH: 5.5-7.0
Amendments:
Compost aged manure perlite for drainage

Growing Zones

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Thrives in zones 2-9; prefers cooler temperatures in zones 2-7

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Seedling

2-3 weeks

Tiny feathery cotyledons emerge; delicate true leaves develop with characteristic finely divided appearance

Keep soil consistently moist. Thin seedlings to proper spacing once 2-3 inches tall. Protect from strong winds.

2

Vegetative Growth

4-6 weeks

Plant rapidly develops tall, sturdy stems (18-36 inches) with abundant blue-green feathery foliage; characteristic dill aroma becomes prominent

Provide full sun and consistent moisture. Support tall varieties with stakes if in windy locations. Harvest outer leaves regularly to encourage bushiness.

3

Flowering

2-3 weeks

Umbels of tiny yellow flowers form at stem tips; flowers arranged in flat-topped clusters characteristic of Apiaceae family

Continue regular watering. Do not harvest leaves once flowering begins if you want seeds. Flowers attract beneficial pollinators.

4

Seed Development

3-4 weeks

Yellow flowers fade; seeds develop and mature, turning brown and dried. Seed heads become papery and tan-colored.

Reduce watering gradually. Allow seeds to fully dry on the plant. Plant becomes increasingly drought-tolerant.

5

Harvest

Varies with use

Seed heads fully mature and dry; leaves may yellow. Plant structure becomes woody and brittle.

Harvest seed heads when completely dry and brown. Cut entire heads and hang to finish drying. Collect seeds as they fall.

Companion Planting

Plan your garden →

Plant with:

cabbage lettuce cucumber nasturtiums marigolds carrot onion

Avoid planting near:

fennel tomato parsnip

Common Pests

  • Generally tolerate or allow for butterfly production; remove only if damage is severe. Hand-pick if necessary.

  • Spray with strong water stream; use insecticidal soap or neem oil for severe infestations. Encourage beneficial insects.

  • Increase humidity; spray with water; use miticides if severe. More common in hot, dry conditions.

  • Remove affected leaves; maintain good air circulation. Use row covers for seedling protection.

Uses

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Pickling & Preservation

Culinary

Dill is the quintessential pickling herb; both fresh fronds and seeds are used to flavor pickled vegetables, cucumbers, and fermented foods. The tall Mammoth variety produces abundant seed for traditional dill pickle recipes. [source]

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Fresh Cooking & Garnish

Culinary

Feathery dill leaves add bright, anise-like flavor to salads, fish dishes, soups, and sauces. Use fresh fronds as an elegant garnish for prepared dishes. [source]

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Digestive & Anti-inflammatory

Medicinal

Dill has traditional uses in supporting digestion, reducing bloating, and soothing digestive discomfort. Dill seed tea and water infusions have been used historically for these purposes. [source]

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Culinary Seasoning & Storage

Household

Dry dill seeds for long-term storage as a versatile seasoning in spice blends, bread, and cheese dishes. Dried leaves retain flavor for several months. [source]

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Pollinator & Butterfly Support

Wildlife

Dill flowers attract beneficial insects, bees, and are a host plant for swallowtail butterfly caterpillars, supporting biodiversity in the garden. The tall Mammoth variety is particularly attractive to pollinators. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

For fresh leaves, begin harvesting outer stems when plant reaches 6-8 inches tall; continue harvesting throughout the season. For seed production, allow flowers to fully mature and dry on the plant, then cut entire seed heads and hang inverted in a paper bag to collect seeds. Seeds are ready when they easily separate from the stem. Mammoth dill produces abundant seeds ideal for seed saving.

Fun Facts

  • 🌱 The name 'dill' likely comes from the Old Norse word 'dilla,' meaning to soothe or lull, reflecting its historical use in calming remedies and as 'dill water' for fussy babies.
  • 🌱 Dill Mammoth can grow 3-4 feet tall, making it one of the tallest dill cultivars and suitable for creating vertical focal points in gardens or as a cut flower for tall arrangements.
  • 🌱 Dill is a cool-season crop that bolts quickly in hot weather; the Mammoth variety tolerates heat slightly better than dwarf varieties but still prefers spring and fall growing seasons.

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