Feverfew
Tanacetum Parthenium
Feverfew, or Tanacetum Parthenium, is a charming perennial known for its medicinal properties, particularly in treating headaches and fevers. Native to Europe, it thrives in sunny gardens and is a favorite among herbalists and gardeners alike.
Everything it needs
9 essentials at a glance
Watering
Feverfew prefers consistently moist soil but should not be waterlogged.
Water when the top inch of soil feels dry, typically every 1-2 weeks, adjusting frequency based on season and humidity. In hotter months, you may need to water more frequently. Signs of over-watering include yellowing leaves and root rot, while under-watering will cause wilting and browning leaf edges.
Light
Feverfew thrives in full sun to partial shade, ideally receiving 6-8 hours of direct sunlight daily.
It can tolerate some afternoon shade, especially in hotter climates, but too much shade may lead to leggy growth. Ensure it is placed in a bright spot to promote healthy flowering.
Soil
The ideal soil for Feverfew is well-draining, rich in organic matter, with a pH range of 6.0 to 7.0.
A potting mix that includes compost, peat moss, and perlite works well to ensure good drainage while retaining moisture.
Humidity
Feverfew prefers moderate humidity levels, around 40-60%.
To increase humidity, you can mist the leaves or place a humidifier nearby. Signs of low humidity include browning leaf tips and leaf drop, while excessive humidity can lead to fungal issues.
Temperature
Feverfew thrives in temperatures between 60°F to 75°F (15°C to 24°C) and is hardy in USDA zones 5-9.
It can tolerate short periods of heat but may struggle in temperatures above 85°F (29°C). In cooler months, protect it from frost to ensure healthy growth.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 every 4-6 weeks during the growing season (spring and summer).
In fall and winter, reduce feeding to once every 8 weeks or stop altogether. Signs of nutrient deficiency include yellowing leaves and poor growth.
Pruning
Prune Feverfew in early spring to encourage bushy growth and remove any dead or damaged stems.
Use sharp, clean pruning shears to make clean cuts. Deadheading spent flowers throughout the blooming season will promote further flowering and prevent self-seeding.
Repotting
Repot Feverfew every 1-2 years or when it outgrows its pot, typically in spring.
Choose a pot 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. Carefully remove the plant, loosen the roots, and place it in fresh potting mix.
Propagation
Feverfew can be propagated through stem cuttings or seeds.
For stem cuttings, take 4-6 inch cuttings from healthy stems in spring, remove lower leaves, and place them in moist potting mix. For seeds, sow them in early spring, covering lightly with soil. Keep the soil moist until germination, which typically occurs in 2-3 weeks.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering or nutrient deficiency.
How to fix it
Check the soil moisture and adjust watering accordingly. If nutrient deficiency is suspected, apply a balanced fertilizer.
Wilting
Why it happens
Wilting can occur due to under-watering or extreme heat.
How to fix it
Ensure consistent watering and provide shade during the hottest parts of the day.
Powdery mildew
Why it happens
High humidity and poor air circulation can lead to this fungal issue.
How to fix it
Improve air circulation around the plant and apply a fungicide if necessary.
Leggy growth
Why it happens
Insufficient light can cause Feverfew to stretch towards the light source.
How to fix it
Move the plant to a brighter location to encourage bushier growth.
Root rot
Why it happens
Over-watering and poorly draining soil can lead to root rot.
How to fix it
Ensure proper drainage and allow the soil to dry out between waterings.
Care through the year
Spring
In spring, prune back any dead stems and start fertilizing every 4-6 weeks. This is also the best time to propagate through cuttings or seeds.
Summer
During summer, ensure consistent watering and deadhead spent flowers to encourage blooming. Monitor for pests and diseases, especially in humid conditions.
Fall
In fall, reduce watering as the plant enters dormancy. You may continue to deadhead flowers until the first frost, but stop fertilizing.
Winter
In winter, protect Feverfew from frost and cold drafts. Water less frequently, allowing the soil to dry out more between waterings.
Toxicity & Safety
Feverfew is generally considered non-toxic to pets and children, but ingestion may cause mild gastrointestinal upset. It is advisable to keep it out of reach of pets to avoid any potential issues.
Good to know
Why are my Feverfew leaves turning yellow?
Yellowing leaves in Feverfew can indicate over-watering or a nutrient deficiency. Check the soil moisture and adjust your watering schedule accordingly.
How often should I water my Feverfew?
Water your Feverfew when the top inch of soil feels dry, typically every 1-2 weeks, depending on the season and humidity levels.
Can I grow Feverfew indoors?
Yes, Feverfew can be grown indoors as long as it receives adequate sunlight, ideally 6-8 hours of bright light daily. Ensure good air circulation to prevent mildew.
How do I propagate Feverfew?
Feverfew can be propagated through stem cuttings or seeds. For cuttings, take healthy stems in spring and place them in moist potting mix. For seeds, sow them in early spring.
What is the best fertilizer for Feverfew?
A balanced fertilizer with an NPK ratio of 10-10-10 is ideal for Feverfew. Apply every 4-6 weeks during the growing season for optimal growth.
When should I prune my Feverfew?
Prune Feverfew in early spring to encourage bushy growth and remove any dead or damaged stems. Regular deadheading during the blooming season will also promote more flowers.
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