Photo: Zihao WangCC BY 4.0via iNaturalistresized / cropped
Fool's Parsley Plant Care
Aethusa cynapium L.
Updated · Sources · How we source care data
With its finely cut, feathery leaves and small white flowers, this plant hails from Europe, Asia, and North Africa. Plant collectors are drawn to Aethusa cynapium for its delicate appearance and unique foliage, making it a standout addition to any garden or collection.
Every 7–10 days
Full sun to partial shade
60–75°F
40–60%
At a glance
How do you care for Fool's Parsley?
Water Fool's Parsley every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–75°F (16–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season. It is reported as toxic to pets, so keep it out of reach of pets.
Where Is the Fool's Parsley Native To?
- Albania
- Algeria
- Angola
- Armenia
- Austria
- Azerbaijan
- Bahrain
- Belarus
- Belgium
- Benin
- Bosnia and Herzegovina
- Botswana
- Bulgaria
- Burkina Faso
- Burundi
- Cameroon
- Cape Verde
- Central African Republic
- Chad
- Côte d'Ivoire
- Croatia
- Cyprus
- Czechia
- Denmark
- Djibouti
- DR Congo
- Egypt
- Equatorial Guinea
- Eritrea
- Estonia
- Eswatini
- Ethiopia
- Finland
- France
- Gabon
- Georgia
- Germany
- Ghana
- Greece
- Guinea
- Guinea-Bissau
- Hungary
- Iceland
- Iran
- Iraq
- Ireland
- Israel
- Italy
- Jordan
- Kenya
- Kuwait
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Lithuania
- Luxembourg
- Madagascar
- Malawi
- Mali
- Malta
- Mauritania
- Moldova
- Montenegro
- Morocco
- Mozambique
- Namibia
- Niger
- Nigeria
- North Macedonia
- Norway
- Oman
- Palestine
- Poland
- Portugal
- Qatar
- Republic of the Congo
- Romania
- Russia
- Rwanda
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Sierra Leone
- Slovakia
- Slovenia
- Somalia
- South Africa
- South Sudan
- Spain
- Sudan
- Sweden
- Switzerland
- Syria
- Tanzania
- The Gambia
- The Netherlands
- Togo
- Tunisia
- Türkiye
- UAE
- Uganda
- Ukraine
- United Kingdom
- Yemen
- Zambia
- Zimbabwe
What Is the Fool's Parsley?
Fool's Parsley (Aethusa cynapium) belongs to the Apiaceae family within the Aethusa genus. Fool's Parsley is native to Europe, western Asia, and northwest Africa. Fool's Parsley is also known as Dog Parsley, Weed Parsley.
Fool's Parsley displays a clumping herbaceous perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Fool's Parsley produces small white umbels.
Leaf size: approximately 3 inches.
How Often Should You Water a Fool's Parsley?
Aethusa cynapium requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Fool's Parsley Need?
Fool's Parsley thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Fool's Parsley Prefer?
Aethusa cynapium grows best at temperatures of 60–75°F. Fool's Parsley prefers humidity levels of 40–60%.
Temperature
60–75°F
Humidity
40–60%
What Soil Mix Works Best for a Fool's Parsley?
Well-draining sandy loam with added organic matter. Good drainage is essential for Fool's Parsley to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Fool's Parsley?
Feed Fool's Parsley every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Fool's Parsley?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Fool's Parsley?
Fool's Parsley can be propagated through seeds, division of root clumps.
Is the Fool's Parsley Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Fool's Parsley?
Fool's Parsley is susceptible to aphids, caterpillars, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Fool's Parsley Need?
Fool's Parsley grows outdoors in USDA Zone 4a – 8b. It survives winters down to planting zone 4a. Fool's Parsley is native to Europe, western Asia, and northwest Africa.
Hardiness Zone
Zone 4a – 8b
Keep exploring plants
Fool's Parsley is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Aethusa genus — compare its care with other Aethusa species on PlantoScan.
Aethusa is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Fool's Parsley thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Aethusa cynapium L., family Apiaceae (first published in Sp. Pl. : 256 (1753)) — World Flora Online record, IPNI name record.
- Pet toxicity: Fool's Parsley is reported as toxic to pets in our plant data (not verified by the ASPCA), so treat it with caution. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Zihao Wang, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 4a – 8b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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