Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Feverfew — Growing reference
| Scientific name | Tanacetum parthenium |
|---|---|
| Seed germination (days) | 10–14 |
| Soil temperature for germination (°C) | 18.3–22.2 |
| First harvest or flowering (days) | 90–120 |
| Measured from | Transplant |
| Plant spacing (cm) | 30.5–45.7 |
| Mature height (cm) | 45.7–61 |
| Mature spread (cm) | 30.5–45.7 |
| USDA hardiness zones | 5–9 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | indoor-start |
Growing directions
Seeds are tiny and require light for germination — press them gently onto moist starting mix without covering. Once established, plants are quite drought-tolerant and spread readily by self-seeding. Shear plants back by half after flowering to maintain a tidy mound and encourage fresh foliage. The leaves are the medicinal part; harvest fresh leaves for tea or tincture — wear gloves as some people experience skin irritation from the foliage.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0