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Plant guide

Oregano.

Origanum vulgare

Pronounced oh-RIG-uh-num vul-GAH-ree

Also known as Oregano

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Oregano
Photo by zebedeugalinha (CC BY) via iNaturalist

Oregano is a hardy, aromatic herb that brings a wonderful Mediterranean flavor to your kitchen. It thrives in sunny spots and is quite easy to grow in pots or garden beds. You'll love how its small, flavorful leaves add a punch to your favorite dishes.

At a glance

Care level
Easy
Plant type
Perennial herb
Light
Full sun
Indoor light
Direct sun
Water
Every 5 to 10 days
Mature size
1 to 2 feet
Growth rate
Medium
Hardiness
USDA 4 to 9
Bloom time
Mid to late summer

Care

Plant your oregano in well draining soil and let it dry out between waterings to prevent root issues. Watch for yellowing leaves, which often signal that the soil is staying too wet. Regular harvesting keeps the plant bushy and encourages fresh, flavorful growth.

Watering
Allow the top inch of soil to dry out completely before watering again.
Feeding
Apply a balanced liquid fertilizer sparingly during the active growing season.
Pruning
Pinch back the stems regularly to encourage a fuller, bushier plant.
Repotting
Repot when the roots become crowded or the plant stops growing vigorously.
Soil
Well draining, sandy or loamy soil
Soil pH
6.0 to 8.0
Temperature
-25 to 35°C
Humidity
30 to 60%
Drought tolerance
High
Lifespan
Perennial, typically 3 to 5 years.
Fragrance
Strong
Deer and rabbits
High

Signs it needs repotting

  • Roots growing out of the drainage holes.
  • Water running straight through the pot without soaking in.
  • Stunted growth during the active season.

Safety

People
This plant is generally considered non toxic to humans when consumed in culinary amounts.
Pets
The ASPCA lists this plant as toxic to cats and dogs. Its essential oils can cause vomiting and diarrhea if pets eat the leaves, though symptoms are usually mild.
Children
The plant is safe for children, though small parts could pose a minor choking hazard if ingested.
Contact allergens
Some individuals may experience mild skin irritation from the essential oils in the leaves.
Airborne allergens
The pollen is generally not considered a major allergen.
Edibility
Ensure you are harvesting Origanum vulgare and not a toxic lookalike, as some plants with similar common names are not culinary herbs.

How to identify it

  • Small, oval, dark green leaves
  • Tiny white or pink flowers
  • Strong, spicy, and aromatic scent
  • Low growing, spreading habit
Height
0.3 to 0.6m
Spread
0.3 to 0.45m
Leaves
dark green, semi-evergreen
Flowers
pink, purple, white, 0.5 to 1cm

Problems to watch for

    Check your oregano from a photo

    Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

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    Growing it

    Propagation
    division, seed, cuttings
    When to plant
    spring, autumn
    Overwintering
    Cut back dead foliage in late autumn. In colder regions, a light layer of mulch can help protect the roots from extreme frost.
    In containers
    Oregano grows very well in containers, provided they have excellent drainage and at least a 20 cm diameter.

    Division

    1. 1. Dig up the entire plant in spring.
    2. 2. Gently pull the root clump into smaller sections.
    3. 3. Replant the divisions in fresh soil.
    4. 4. Water thoroughly.

    Plant oregano near vegetables to help mask their scent from pests.

    Grows well with

    • Tomato · They are classic culinary partners and grow well in similar soil conditions.
    • Basil · Both herbs enjoy the same sunny, well drained environment.

    Similar species

    • Sweet Marjoram · It is a close relative with a sweeter, milder flavor profile.

    Science

    Family
    Lamiaceae
    Genus
    Origanum
    Order
    Lamiales
    Class
    Magnoliopsida
    Native range
    Europe, Mediterranean region, and parts of Asia.
    Conservation
    It is a common, widespread species and is not currently of conservation concern.

    It grows in well drained, rocky soils and spreads via underground rhizomes to colonize open, sunny areas.

    Value to wildlife
    nectar source
    Pollinators
    bees, butterflies
    Uses
    culinary herb, ground cover, pollinator garden, container plant

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Soil reaction
    6/9
    Light
    7/9
    Temperature
    5/9
    Moisture
    4/9
    Nutrients
    4/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Does oregano need full sun?
    Yes, it thrives in full sun to produce the best flavor.
    How often should I water it?
    Water when the top inch of soil feels dry to the touch.

    Where the name comes from

    The scientific name Origanum vulgare translates to common mountain joy, reflecting its native habitat and culinary appeal.

    Good to know

    • The name oregano comes from the Greek words oros, meaning mountain, and ganos, meaning joy.
    • Oregano was once known as wild marjoram.
    • It is a member of the mint family, Lamiaceae.
    • Dried oregano is often more potent than fresh leaves.

    Also in

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    This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.