Costmary - Tanacetum balsamita (Care, Characteristics, Distribution, Images)

Costmary

Also known as: Alecost

Costmary (Tanacetum balsamita) is believed to have originated near the Mediterranean. This aromatic herb releases a sweet fragrance reminiscent of eucalyptus. Plant it as an attractive addition to ornamental borders and herb gardens. Though not harmful to humans, costmary is poisonous to dogs and cats.

Scientific classification

Species

Costmary (Tanacetum balsamita)

Asters bellflowers fanflowers and allies

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20 cm to 61 cm

Plant Height

50 cm

Spread

Green, Gray

Leaf Color

2.5 cm to 5 cm

Flower Size

White, Yellow

Flower Color

White, Yellow, Green, Gray, Silver

Stem Color

Deciduous

Leaf type

20 - 38 ℃

Ideal Temperature

Summer, Fall

Growth Season

Rapid

Growth Rate

Images of Costmary

Distribution of Costmary

Distribution Map

Costmary is native to regions around Western Asia and Eastern Europe, where it grows naturally. It has been introduced and thrives across much of the European continent and some parts of North America where it is often cultivated. Its distribution reflects a successful adaptation to various climates outside of its indigenous range.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Roadsides

Hemisphere Trend Curve

Northern

Sorthern

Quickly Identify Costmary

Upright growth habit, 3-6 feet (91-183 cm) tall, distinct within Asteraceae family.

Silvery-green leaves with minty smell, 4-8 inches (10-20 cm) long, crenate margins.

Small, yellow, button-like flowers in late summer to autumn, up to 0.7 inches (1.8 cm) wide.

Fruit is achene, 5-10 mm (0.2-0.4 inches) long, with crown-like pappus at apex.

Erect stem, 1-3 feet (30-90 cm) tall, sometimes branched, robust and green.

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Care Guide for Costmary

Every 1-2 weeks

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Costmary thrives in temperate regions, appreciating moderate moisture with occasional drought resilience. Watering once every 1-2 weeks supports its health, especially during active growth phases. Adequate hydration is essential for lush foliage, making watering patterns vital for indoor and outdoor cultivation.

Fertilize: Use high nitrogen fertilizers for costmary to encourage lush foliage, applying bi-monthly in spring and summer, and reducing in fall. A teaspoon per plant, followed by watering, prevents root burn. Adjust based on costmary's growth response, avoiding over-fertilization, especially in winter dormancy.

Pruning: Costmary has aromatic leaves and small yellow flowers. Prune in early to late spring to enhance growth and remove dead stems. Cut back flowering stalks post-bloom for continuous foliage, promoting air circulation and reducing disease while maintaining shape. Proper practices enhance costmary's health and aesthetics.

Propagation: Costmary, from the Asteraceae family, thrives with aromatic leaves and can be propagated by rootball divisions in early spring or through seeds. Key conditions for successful growth include good drainage, sunlight, and regular watering to prevent waterlogging during germination and development.

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