tansy

tansy | tanacetum vulgare | boerenwormkruid

PLANT STORY

Tansy has always been a plant of quiet power. Native to Europe and Asia, it once grew thick along monastery walls and cottage hedgerows, its fern-like leaves releasing a sharp, camphor scent when brushed. Medieval herbalists prized it as a cleanser, tucking sprigs into linens and doorframes to repel moths and ill luck. Even the name comes from the Greek athanasia—“immortality”—a nod to its long-lasting blooms and preservative qualities.

In late summer, bright yellow button-like flowers cluster in dense heads, untouched by insects that dislike its bitter oils. Farmers once scattered tansy on barn floors to keep flies at bay, and Irish folklore whispers of wreaths hung to protect newborns. Though now grown mostly as an ornamental, its reputation lingers: a hardy sentinel, self-seeding at the edges of gardens, reminding us that beauty and practicality often share the same root.

PLANT GUIDE


planting period
spring or early autumn so the roots can establish before winter

harvest period
mid to late summer

soil
pH 6-7

sun
full sun 

water
low to moderate water need. drought-tolerant once mature

planting
scatter seeds evenly at least 30-45 cm apart and without covering them with soil

 


germination
sow seeds in spring on the soil surface and keep lightly moist; they usually germinate in 10–14 days.

maintenance
once established, tansy is low‑maintenance—water sparingly, remove spent blooms to control self‑seeding, and divide clumps every few years.

flower harvest

cut flower heads at full bloom in mid‑ to late summer for the strongest color and fragrance.  Therefore, place two fingers below the flower crown and apply soft pressure upwards till the flower snaps off close to the stem. Use the flowers right away or place them onto an absorbing towel to dry before storing them.

COLOR PRODUCED

mordant dyes