Dill care

Light

Dill is a sun-lover and needs the brightest spot in the home to thrive. 6+ hours of direct sun. Indoors that almost always means a south or west-facing windowsill in the northern hemisphere. Plants moved abruptly from low light to direct sun will scorch — acclimate them over 7-10 days by giving a little more sun each day.

Watering

Water dill twice-weekly watering. The actual day count varies with pot size, light level, and the season — the finger test (or, better, lifting the pot to feel its weight) is more reliable than a calendar. Empty any drainage saucer after watering so the pot is never sitting in water. Consistent moisture; drought stress hastens bolting.

Soil and pot

Dill grows best in free-draining loam. pH 5.5-6.5. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Dill sits happiest at around 40-70% (outdoor) humidity and 15-24°C (60-75°F). Outdoor humidity rarely matters. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed dill sparingly. Light feed at planting; avoid high nitrogen. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on dill in the Growli community. Each is annotated with the most common cause so you know where to start.

• Bolting fast — Heat triggers flowering; succession-sow every 3 weeks.
• Falls over — Top-heavy stems; stake or grow against a fence.
• Swallowtail caterpillars — Beneficial; plant extra for them.
• Aphids on shoot tips — Rinse off or use horticultural soap.
• Poor germination — Old seed; use fresh and surface-sow (needs light).

Companion plants

Dill pairs well with Cucumber, Onion, Cabbage, and Lettuce. These are species with similar light and water needs, so you can grow them in the same bed or container without conflict.

Propagation

Direct-sow in spring and successively until midsummer. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Dill is pet-safe. Anethum graveolens is not listed by the ASPCA. Safe for cats and dogs in moderation. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Dill deep-dive guides

Every aspect of dill care, each with its own calibrated guide:

• Dill watering schedule
• Dill light requirements
• Best soil mix for dill
• Dill fertilizing guide
• When to repot dill
• How to propagate dill
• Dill growth rate & size
• Dill cold hardiness
• Dill temperature & humidity
• Is dill toxic to cats & dogs?

Related guides

Dill is also commonly called common dill or dill weed.

• Basil care — light, water and common problems
• Herb garden care — light, water and common problems
• Mint care — light, water and common problems
• All 200 plant care guides in the Growli library