How to grow feverfew
Overview
Feverfew is a short-lived herbaceous perennial grown for its small, daisy-like white flowers and aromatic foliage. It is valued in gardens as a filler plant and for its traditional medicinal use. The plant self-seeds aggressively across open soil and requires deadheading to control spread.
Soil Preparation
Feverfew prefers free-draining, moderately fertile soil with a pH of 6.0–7.0. Improve heavy clay with coarse sand or compost. Avoid waterlogged sites to prevent root rot. A light mulch helps retain moisture in dry periods.
Growing Guide
Sow feverfew seed directly on the soil surface in full sun, as light aids germination. Space seedlings 30–45 cm apart in well-drained, moderately fertile soil. For a continuous display, sow in succession every 4–6 weeks. In hot climates, provide afternoon shade to prevent leaf scorch. Pinch out tips when 10 cm tall to encourage bushiness.
Sowing
Sow seed on the surface in spring or autumn, barely covering with fine soil. Germination takes 7–14 days at 18–22°C. Direct sow is easiest, but transplant when 5 cm tall if starting in trays. Space 30 cm apart.
Care
Feed lightly with a balanced organic fertiliser in early spring. Deadhead spent flowers regularly to prevent excessive self-seeding. Cut back hard after flowering to maintain a compact shape and encourage fresh growth.
Companion Planting
Plant feverfew near roses and fruit trees to deter aphids and other pests. Avoid planting near fennel, which may inhibit its growth. It also pairs well with lavender and other drought-tolerant herbs in a mixed border.
Common Pests & Risks
Aphids are the main pest, often clustering on new growth. Control with a strong water spray or insecticidal soap. Powdery mildew can occur in humid conditions; improve air circulation and avoid overhead watering. Whitefly may also appear in dense plantings.
Harvesting
Harvest feverfew flower heads when they are fully open, typically from late spring to summer. Cut stems in the morning after dew dries for best potency. Use fresh or dry in a well-ventilated, dark place for traditional remedies.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce water and improve soil. Leggy growth: insufficient light; move to full sun. Stunted plants: aphid infestation; spray with insecticidal soap. Powdery mildew: humid air; space plants wider and water at soil level. Excessive self-seeding: deadhead before seeds mature.