How to Grow Tansy
Tanacetum vulgare
A vigorous hardy perennial herb with fern-like aromatic foliage and clusters of bright yellow button flowers in summer. Excellent companion plant that naturally repels many insect pests. Contains rhizomes and will spread if not contained.
Yearly Lifecycle
Care Essentials
Minimal feeding needed. A light compost top-dressing in spring is sufficient.
Watch For
- Aphids
- Spreading beyond boundaries via rhizomes
Companions
Potatoes, Cucumbers, Squash, Roses
Pet Safety
Care Requirements
Light
Full sun to partial shade
Flowers best in full sun but tolerates partial shade. In very hot climates, light afternoon shade prevents wilting.
Watering
Drought-tolerant once established
Needs little supplemental water once established. Only water during extreme drought. Overwatering promotes excessive spreading.
Fertilizing
Minimal, light compost in spring
A light compost top-dressing in spring is sufficient. Tansy is adapted to poor soils and heavy feeding encourages rampant growth.
Pruning
Deadhead to prevent self-seeding
Remove spent flower heads regularly to prevent self-seeding. Cut all stems to ground level in late autumn after foliage dies back.
Spacing & Planting
| Plant spacing | 60 cm |
| Row spacing | 75 cm |
| Mature height | 120 cm |
| Mature spread | 60 cm |
