Mammoth Long Island Dill

Dill

Zone 5a Save Garden

🌱 45d to harvest Upright

Fragrant as a summer breeze, Mammoth Long Island Dill unfurls feathery, deep-green fronds with a bold, clean aroma that lingers i…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 8th
Transplant / Sow Outdoors	May 8th
Harvest Begins	Jun 22nd
Harvest Ends	Sep 30th

Crop Details

Trait	Value
Days to Maturity	45
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	35
Harden Off (days)	Not Required

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Frequently Asked Questions

What pest or disease commonly affects Anethum graveolens (dill), and how do I control it?

Dill (Anethum graveolens) is especially prone to aphids and, in humid weather, powdery mildew. Spray aphids off with a strong water jet and repeat every 2–3 days for a week, or use insecticidal soap if infestations persist; for powdery mildew, improve airflow by spacing plants and avoid wetting the leaves, then remove heavily affected foliage early.

How often should I water Mammoth Long Island Dill during peak growth?

During the main leaf-growing phase, keep the top 1–2 inches of soil consistently evenly moist—typically about 1 inch of water per week, split into 2–3 waterings in warm weather. Let the soil surface dry slightly between waterings, but don’t let it fully dry out, because drought can slow leaf production and push plants toward early flowering.

How can I tell when Mammoth Long Island Dill is ready to harvest?

Harvest dill leaves once plants are about 6–8 inches tall and actively growing, typically around 35–45 days from sowing. For the best flavor, cut leafy sprigs in the morning before heat builds, and harvest flower heads when they start to form and broaden if you’re aiming for seed (they mature after further flowering).

Fragrant as a summer breeze, Mammoth Long Island Dill unfurls feathery, deep-green fronds with a bold, clean aroma that lingers in the air. Expect long, vigorous stems and abundant foliage with a tender, airy texture—ideal for gathering repeatedly at about 45 days. Grow it for its signature dill character in pickling brines and for fresh flavoring in sauces, dips, and salads, where its bright notes shine most beautifully.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 35°F before moving outdoors.

Expert Note

Dill is best direct-sown (it resents root disturbance), and sow successive small plantings every 2–3 weeks for a longer harvest of both fronds and seed heads.