Annual Herb · 10 varieties

Dill

Anethum graveolens

Apiaceae — the same plant family as carrot, celery, parsley, parsnip and 5 more here. Relatives share pests and diseases, which is why rotation plans group by family.

Dill (Anethum graveolens) is an annual herb. It wants full sun and pH 5.5–6.5 soil. It matures in about 42–56 days from sowing. Watch for aphids and powdery mildew. Below: its full sourced profile from 8 extension sources, plus a planting calendar timed to your frost dates.

Sun Full sun
Water Moderate
Matures 42–56 days — from seed from seed
Mature size 1.5–5 ft
Spacing 3–12 in
Soil pH 5.5–6.5
Frost Half hardy
When to plant dilltypical · zone 6b
Your zone
…or your ZIP, for your real frost dates

Germinating
Seedlings
Growing
Harvest
Flowering

Typical dates for zone 6b — set your zone or ZIP for yours. This calendar assumes the crop is direct sown. Timing is a guide from the crop's sourced growth stages; confirm with your local frost dates and extension before you sow.

Growing dillevery fact says where it came from

What we will not put a number on

We do not give a feeding rate for this crop, and that is deliberate rather than a gap. The figures published by extension services are pounds of nitrogen per acre for a production field — they do not convert safely to a raised bed or a pot without knowing your soil test and your fertilizer's analysis, and guessing errs toward burning roots. It is also why every chart you find online disagrees with the next one.

We give watering as a depth per week rather than gallons per plant, because that is how it is actually measured and how the published figures are written. A gallons-per-plant number depends on your spacing, your soil and whether the plant is in a pot — so it would look more precise than it is.

Site & soil

Sun
Full sun
Soil pH
5.5–6.5
Soil texture
Loam, Sandy, Well drained
Frost tolerance
Half hardy
Suffers in days above
95 °F

No published figure for the temperature frost starts to hurt it, the temperature that would kill it and a warm-night limit. We looked — where a number is missing here it is missing from the research, not skipped. The crop’s frost and heat tolerance above still applies.

The plant

Mature height
1.5–5 ft
Mature spread
2–3 ft
Growth rate
Moderateest
Spacing in row
3–12 in
Between rows
12–24 in
Planting depth
0.25 in
Container size
5 gal
Support
Self-supportingest
Grown from
Direct sow

There is no line here for how much water it wants each week, because we have no figure to put there. We went looking and wrote down what we read — it is missing on purpose, not because nobody checked.

Water & feeding

Water needs
Moderate
Critical water
Germinationest
Feeding
Low

Timing & fruiting

Days to maturity
42–56 days from seed
Harvest cues
Rapid leaf growth, First flowers

There is no line here for how warm the soil should be for the seed to come up, because we have no figure to put there. We went looking and wrote down what we read — it is missing on purpose, not because nobody checked.

Planted again for autumn

Sow by
early Sep typical · zone 6b

42 days to maturity from sowing, counted back from the first frost above. Not published for anywhere in particular: it is your own frost date and this crop's own figure, which is why it works wherever you are. A days-to-maturity figure is a catalog number for a good season rather than a promise, and a cold month moves it.

Edible parts per source: leaf, seed, flower, stem.

What tends to go wrongmost-cited first
PestsAphidsParsleywormTomato hornworm
DiseasesPowdery mildewAster yellowsPhytophthora blightRoot rot

Compiled from the extensions cited below. Which ones actually show up depends on your region — your extension's local list is the last word.

Companionswhat to plant near dill
Cabbage familyTrialed

Dill flowers feed the tiny parasitoid wasps that hunt cabbage worms. Let some of it bloom near the bed.

CarrotsTraditional

Same family, same pests, and mature dill is said to stunt carrots. 'Said' is doing some work there — but why risk it.

Companion pairings from university extensions; badge = how strong the evidence is.

⚠ Reported toxicityverbatim from cited sources

Different parts differ — the edible part is the leaf and seed and flower and stem; the notes below flag other parts or preparations.

PetsNon toxic to dogs, Non toxic to cats, Non toxic to horses

Recorded exactly as the source states it — not medical or veterinary advice. If a person or animal may have eaten a toxic part, call Poison Control (1-800-222-1222) or your vet / the ASPCA line (888-426-4435).

All 10 varietiesthe ones with their own page are linked
Variety Type DaysWhat it is known for
Bouquet Bouquet 40–45 Johnny's Selected Seeds describes this asgood for cutting and putting in a vase
Dukat Dukat 42–56
Fernleaf Fernleaf 55–60 University of Wisconsin-Madison Division of Extension records this asslow to run to seed in heat · smaller than most · happy in a pot
Green Sleeves Greensleeves 40–50
Hera Bunching 40–50 Johnny's Selected Seeds describes this asslow to run to seed in heat
Hercules Bunching 42–56 University of Wisconsin-Madison Division of Extension records this asslow to run to seed in heat
Long Island Mammoth Heirloom Mammoth 60
Mammoth Heirloom Mammoth 42–56
Superdukat Dukat 40–45 University of Wisconsin-Madison Division of Extension records this asslow to run to seed in heat
Vierling Vierling 42–56 University of Wisconsin-Madison Division of Extension records this asgood for cutting and putting in a vase
Sources8 cited · 8 organizations
  • ASPCA Animal Poison Control Center
  • NC State Extension
  • Penn State Extension
  • University of Illinois Extension
  • University of Maryland Extension
  • University of Minnesota Extension
  • University of Wisconsin-Madison Division of Extension
  • Utah State University Extension

We compile bare facts from these university-extension and horticultural sources, never copied prose. 16 of the 19 values on this page carry a citation. The rest are marked est; hover one and it says why — either nobody publishes a figure we could point at, or a person set it and attached no source. Figures vary with climate and seed source; confirm with your local extension before you buy.

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