Rosemary

Salvia rosmarinus

Rosemary (Salvia rosmarinus) is an evergreen Mediterranean sub-shrub. It loves sun and dry feet, grows slowly and is perennial — ideal in soil and coco, in hydro only if very well aerated.

Aggiornato:

Important notes

large amounts / pregnancy: Safe as a culinary herb. Avoid very large amounts or concentrated rosemary oil in pregnancy.

Luce

Full sun, 14–16 h of light. Low light makes it sparse.

Irrigazione

Sparingly: water only once the top of the substrate has dried. Waterlogging is the main killer.

Temperatura

18–28 °C; warmth-loving, mature plants tolerate light frost.

Umidità

40–55 %. Dry, airy spot.

Valori target per metodo e fase

Hydro
Fase pH EC (mS/cm) Acqua °C Aria °C Umidità % Luce h Durata (giorni)
Germinazione 6–6.5 0.4–0.8 20–24 18–24 50–60 14 21
Piantina 6–6.5 0.8–1.2 18–22 18–24 45–55 14 30
Vegetativa 6–7 1–1.5 18–22 18–28 40–55 14 45
Raccolta 6–7 1–1.4 18–22 18–28 40–55 13 45
Terra
Fase pH EC (mS/cm) Acqua °C Aria °C Umidità % Luce h Durata (giorni)
Germinazione 6.3–6.8 0.4–0.8 18–24 50–60 14 21
Piantina 6.3–6.8 0.8–1.2 18–24 45–55 14 30
Vegetativa 6.3–7.3 1–1.5 18–28 40–55 14 45
Raccolta 6.3–7.3 1–1.4 18–28 40–55 13 45
Cocco
Fase pH EC (mS/cm) Acqua °C Aria °C Umidità % Luce h Durata (giorni)
Germinazione 6–6.5 0.4–0.8 20–24 18–24 50–60 14 21
Piantina 6–6.5 0.8–1.2 18–22 18–24 45–55 14 30
Vegetativa 6–7 1–1.5 18–22 18–28 40–55 14 45
Raccolta 6–7 1–1.4 18–22 18–28 40–55 13 45

Problemi comuni

Root rot in wet soil, powdery mildew in still air. Plant very free-draining.

Space & Size

Final height
100 cm
Final width
60 cm
Spacing
50 cm
Root depth
35 cm
Min. container (Hydro)
≥ 6 L
Min. container (Terra)
≥ 10 L
Min. container (Cocco)
≥ 8 L

Pests & diseases

Pest / Disease Symptom Organic treatment
Spider mites fine webbing, speckled leaves raise humidity, predatory mites
Rosemary beetle metallic striped beetles, leaf damage hand-pick
Root rot browning from waterlogging gritty mix, water sparingly

Edible parts

  • Leaves · edible from Vegetativa

Tecniche di resa

Harvest young shoot tips; avoid cutting into old wood, which regrows poorly.

Propagation & pollination

Method
cutting
Germination time
21 days
Germination temp
18-24 °C
Pollination
insect
Hand pollination needed
no

easiest from cuttings

Companion planting

🟢 Good neighbours: Coriander (Cilantro), Sage, Bay Laurel

Flavor

resinous, piney, savoury

Storage

Sprigs in the fridge or dried — keeps well.

History

Rosemary ("dew of the sea") comes from the Mediterranean and has symbolised remembrance and loyalty since antiquity.

Nutrition

Rich in antioxidants (rosmarinic acid), supports circulation.

Sources

Florabase

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