Last edited on 2 Nov 2026. View history
Sweet Annie
Sweet Annie
Artemisia annua
A straggly annual medicinal herb in the wormwood family, up to about 1 m tall but not wide, with silver leaves and a strong, sweet scent. It likes heat and Mediterranean-type sites. Sow in late spring by pressing seed onto fine, weed-free mix without covering it, keep it moist but not wet, prick out at the second leaves and transplant at 5 cm high, 30 cm apart on the diagonal.
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Sweet annie facts
Lifespan
Annual
living and reproducing in a single year or less
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Ecological requirements
Data from the FAO EcoCrop database for Artemisia annua
| Optimal temperature | 13 - 29 °C |
|---|---|
| Absolute temperature | 10 - 35 °C |
| Optimal rainfall | 600 - 1300 mm/year |
| Absolute rainfall | 300 - 1500 mm/year |
| Optimal soil pH | 6.0 - 8.0 |
| Absolute soil pH | 5.5 - 8.5 |
| Crop cycle | 170 - 190 days |
| Max altitude | 3600 m |
| Life form | herb |
| Life span | annual, biennial |
| Habit | erect |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium, light |
| Optimal soil fertility | high |
| Optimal soil drainage | well (dry spells) |
| Photoperiod | neutral day (12-14 hours) |
| Optimal light | clear skies to very bright |
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