Rosemary
rosmarinus officinalis
Also known as: ["Dew of the Sea","Compass Weed"]
Overview
An evergreen shrub with needle-like leaves and blue flowers, widely used for culinary and medicinal purposes.
Benefits & Perks
["edible fruits","medicinal use","culinary herb","fragrant flowers","drought tolerant","deer resistant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Lamiales |
| Family: | Lamiaceae |
| Genus: | Rosmarinus |
| Botanical Name: | Rosmarinus officinalis |
Plant Characteristics
Basic Information
- Category: Herbs & Weeds
- Suitable Location: outdoor garden bed in a sunny, sheltered spot or container on a patio
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"7–10"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining
- Soil Type: Well-draining, sandy loam with organic matter.
Maintenance Level
- Maintenance Level: low
- Toughness Level: high
- Pruning Frequency: Annually in late winter or early spring; light pruning can be done after flowering.
- Pruning Intensity: Moderate; avoid cutting into old wood as it may not regrow.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); adjust for intense summer sun with partial afternoon shade.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from scorching in hot climates; place indoors near a south-facing window if outdoors is not feasible.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun
Rotate plant for even growth; avoid direct sun through glass in summer; provide shade during peak heat.
Watering
every 7–10 days, allowing soil to dry between waterings
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overwatering.
Soil
well-draining, sandy or loamy soil with low fertility
pH: 6.0–7.0 (slightly acidic to neutral)
Use raised beds for better drainage; avoid heavy clay soils; topdress with compost annually.
Temperature
Ideal range: 60–75°F (15–24°C); tolerates mild frosts but prefers moderate temperatures.
Protect from frost; avoid sudden temperature swings; ensure good air circulation.
Fertilizing
every 2–3 months during active growth, using a balanced, slow-release fertilizer
Use a slow-release fertilizer for convenience; avoid over-fertilizing to prevent root burn; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Late spring to early summer when new growth is vigorous.
Environment
Warm (70–75°F), high humidity (70–80%), and bright indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus potting mix.
Hormone
Rooting hormone is recommended for faster root development.
Timeline
Roots develop in 4–8 weeks; new growth appears in 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting bottle.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Selective cutting of stems to maintain shape and promote airflow.
Pruning Plan
Shape the plant, encourage bushiness, and remove dead or weak growth.
Tools
Pruning shears, sharp knife, gloves.
Checklist
Sterilize tools; prune dead or crossing branches; shape evenly; clean up debris.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter); ensure good drainage.
Method
Remove plant gently; trim roots if needed; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for growth and soil freshness.
Checklist
Check root bound status; prepare new pot; use fresh soil; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; adjust for season.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain; water in the morning to reduce evaporation.
Watering Schedule Tips
Water deeply when the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf drop, or browning edges in excessive heat; stunted growth or leaf discoloration in cold.
Cold Stress
Slows growth, may cause leaf drop or dieback; roots are vulnerable to freezing in poorly drained soil.
Solution: Move to a sheltered location; mulch roots; protect from frost with a cover or indoor placement.
Hot Stress
Leaf scorch, wilting, or reduced fragrance; may drop leaves to conserve water.
Solution: Provide afternoon shade; increase humidity; water deeply but avoid wetting foliage.
Fertilizing Guide
Fertilizing Checklist
Check season; dilute fertilizer; apply to moist soil; rinse tools after use.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength; apply every 4–6 weeks during growing season (spring/summer); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicRosemary is not highly toxic to cats, but ingestion of large amounts can lead to mild gastrointestinal upset. The essential oil is more potent and should be avoided.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested in large quantities
Dogs
Slightly ToxicWhile small amounts of rosemary are generally safe for dogs, ingestion of large quantities can cause mild gastrointestinal irritation. The essential oil is more concentrated and can be more harmful if ingested.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested in large quantities
Humans
Non-toxicRosemary is generally considered safe for human consumption in culinary amounts. However, excessive intake, particularly of the essential oil, can lead to gastrointestinal upset and other mild symptoms. The plant contains compounds like camphor and cineole, which in high concentrations may have adverse effects.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
Generally non-toxic, but excessive consumption may cause issues
Frequently Asked Questions
Q: Is rosemary safe for pets?
A: Yes, rosemary is non-toxic to dogs and cats.
Q: How often should rosemary be watered?
A: Rosemary prefers well-drained soil and should be watered sparingly, allowing the soil to dry between waterings.
Q: Can rosemary be grown indoors?
A: Yes, rosemary can be grown indoors with adequate sunlight and proper drainage.
Quick Reference
| Family: | Lamiaceae |
| Care: | easy |
| Light: | full sun |
| Water: | every 7–10 days, allowing so |
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