Common Tansy Guide
Essential oils on tansy can be toxic to some individuals. Tansy’s supple stems and sensibly sized blooms can be a splendid addition to your garden. These sensational little flowers contain a natural insecticide and can repel pests in the garden as well as in the house if dried for potpourri. These flowers are also especially favored for ladybugs looking to lay their eggs.
Tansy grows best in cooler temperatures between 40°F-70°F. They do great in containers and small gardens. Bank on Seeds recommends transplanting.
If Direct Seeding
- Direct seed outside 2 weeks before last frost date; or
- Direct seed into a container 6-8 inches deep and wide anytime of the year. It can be placed outside when the temperature is between 45°F-70°F; or
Begin the growing season early and start the flower seeds indoors in trays or pods 8 weeks before the last frost date. Germination is best and fastest between 68°F-75°F. It can be transplanted outside 8 weeks later.
Sow seeds ¼ inch deep and an inch apart with rows spaced 12-18 inches apart. Germination will take 14-28 days.
Tansy does well in almost any type of soil but prefers well-draining soil free of weeds. They also love full sun and partial shade. As a hardy plant, tansy is quite drought and frost tolerant. Water once a week or when the top 4-5 inches of soil are dry. Let dry fully between watering.
They do not require fertilizer.
Common tansies are full grown in 70-80 days. Cut the blooms for a pop of color in your home or keep them in the garden to trap aphids and attract butterflies and bees. Prune the flowers often to promote growth. Tansy is NOT for consumption.
No major pests or disease.
*Wash hands after handling tansy. It contains oils which may be irritating for some people. Tansies can be a wonderful companion plant, but be warned, these button sized flowers can spread rapidly if not kept in check. We recommend trying them in a container first if spread is an issue in your plot. *