Rosemary Salvia rosmarinus 'Tuscan Blue' (Ro)
ABOUT
'Tuscan Blue' Rosemary is an evergreen shrub with a robust and upright growth habit. Its foliage is dense with needle-like leaves that are rich green in color. The leaves emit a strong, fragrant aroma when bruised or brushed against, a characteristic scent reminiscent of pine and lemon. In the right conditions, this rosemary variety produces profuse, striking deep blue flowers. These blossoms can attract bees and other pollinators to the garden. The overall appearance of 'Tuscan Blue' Rosemary is both aesthetically pleasing and functional, as its leaves are commonly used as a culinary herb. The plant has a distinctive and tidy appearance that can serve as both an ornamental feature and a practical addition to herb gardens.
About this plant
- Names
Family
Lamiaceae
Synonyms
Rosemary, Tuscan Blue Rosemary
Common names
Rosmarinus officinalis, Rosmarinus officinalis var. albiflorus, Rosmarinus officinalis var. angustissimus, Rosmarinus officinalis var. angustifolius, Rosmarinus officinalis var. argenteus, Rosmarinus officinalis var. aureus, Rosmarinus officinalis var. lavandulaceus, Rosmarinus officinalis var. prostratus, Rosmarinus officinalis var. palaui, Salvia officinalis var. rosmarinus.
- Toxicity
To humans
Rosemary is generally not toxic to humans and is widely used as an herb in cooking. However, consuming large quantities of the essential oil or the plant in concentrated forms can potentially lead to toxicity. Side effects of rosemary toxicity may include vomiting, spasms, coma, and in some cases, pulmonary edema. It is important to use rosemary in moderation and to consult with a healthcare professional if any adverse reactions occur.
To pets
Rosemary is generally considered non-toxic to pets and is often used as a natural flea repellent. However, as with humans, consuming large amounts of the essential oil could potentially lead to toxicity. Symptoms of rosemary poisoning in pets may include gastrointestinal upset, such as vomiting or diarrhea. Using rosemary in reasonable cooking amounts around pets is usually safe, but caution should be taken with essential oils and concentrated extracts.
- Characteristics
Life cycle
Perennials
Foliage type
Evergreen
Color of leaves
Green
Flower color
Blue
Height
6 feet (1.8 meters)
Spread
4 feet (1.2 meters)
Plant type
Shrub
Hardiness zones
8
Native area
Mediterranean
Benefits
- General Benefits
- Culinary Uses: Rosemary is widely used in cooking for flavoring meat dishes, stews, and soups, particularly in Mediterranean cuisine.
- Aromatic Qualities: The plant emits a pleasant fragrance which can naturally freshen up the surrounding environment.
- Landscape Design: Rosemary 'Tuscan Blue' adds aesthetic value to gardens with its beautiful blue flowers and evergreen needle-like leaves.
- Drought Tolerance: The plant is adaptable to dry conditions, making it a good choice for water-wise gardens.
- Pollinator Attraction: Its flowers can attract bees, butterflies, and other beneficial insects, promoting biodiversity.
- Easy Maintenance: Rosemary is known for being hardy and requiring minimal care once established.
- Culinary Use: Rosemary can be used fresh or dried and is a staple in various culinary traditions.
- Evergreen Presence: Being an evergreen, rosemary provides year-round color and structure in a garden.
- Medical Properties
- Antioxidant - Rosemary contains compounds that can help protect the body from oxidative stress.
- Anti-inflammatory - It may reduce inflammation, potentially benefiting conditions like arthritis.
- Antimicrobial - Rosemary oil has been shown to possess antimicrobial properties against certain pathogens.
- Neuroprotective effects - There is some evidence suggesting rosemary may have a protective effect on the brain and nervous system.
- Cognitive enhancement - Some studies suggest rosemary might improve cognitive performance and mood.
- Digestive health - Traditionally, rosemary has been used to help alleviate digestive issues like indigestion and bloating.
- Respiratory health - Inhalation of rosemary essential oil may help with respiratory conditions by acting as a decongestant.
- Air-purifying Qualities
This plant is not specifically known for air purifying qualities.
- Other Uses
- Ro can be used as a natural wood conditioner and preservative; the oil derived from ro helps in maintaining wooden furniture and preventing degradation.
- The plant can be used in aromatic sachets; dried ro leaves keep linens smelling fresh and can also deter moths.
- Ros can be used to create a natural dye for fabrics; traditionally, it has been used to give a subtle green tint to various textiles.
- The stems of ro can be used as skewers for barbecue; they impart a distinctive flavor to meats and vegetables when used on the grill.
- Ro leaves can be infused in oils and vinegars, creating flavored condiments for culinary use that carry its unique aroma and taste.
- Leaves of this plant can be included in homemade potpourri mixtures, contributing a refreshing scent to home decor.
- Ro can also serve as a natural insect repellent; placing branches around the home may help deter flies and mosquitoes.
- Fresh ro sprigs are often used as a natural air freshener in cars or closets, emitting a pleasant scent without synthetic chemicals.
- The flowers of ro can be used in edible landscaping, providing both visual appeal and a source of garnish for dishes.
- In arts and crafts, ro sprigs can be incorporated into wreaths, floral arrangements, or other decorations for adding a natural element with Mediterranean flair.
Interesting Facts
- Feng Shui
The Rosemary plant is commonly used to purify and cleanse a space, promoting clarity and concentration. It can be placed in the study or home office to enhance focus or in the kitchen to promote health and well-being. The plant's strong and fresh scent is believed to energize the room and support mental acuity.
- Zodiac Sign Compitability
The Rosemary plant is not used in astrology practice.
- Plant Symbolism
- Remembrance - Historically linked with memory, Tuscan Blue rosemary is often used in ceremonies to honor those who have passed, reflecting a desire to remember and keep memories alive.
- Loyalty - Evergreen nature of rosemary symbolizes constancy and fidelity, making it a plant associated with loyal love and enduring relationships.
- Protection - Rosemary is thought to ward off evil spirits and negativity. It's often planted or placed around homes for its protective qualities.
- Healing - With its aromatic oils and history of medicinal use, rosemary represents healing and has been used in various therapies to improve well-being.
- Purification - The strong scent and cleansing properties of rosemary tie it to purifying rituals and the cleaning of spaces, both physically and spiritually.
- Friendship - Sharing rosemary between friends is a gesture that implies the strengthening of the bond, as the plant is seen as an emblem of camaraderie.
- Water
Rosemary 'Tuscan Blue' requires well-drained soil and should not be overwatered. It's best to water this plant when the top inch of soil feels dry to the touch. Typically, watering once a week with 1 gallon of water is adequate. During hotter, drier periods, the frequency may increase, but always check the soil moisture first. Overwinter, when the plant's growth slows down, reduce watering significantly to prevent root rot.
- Light
Rosemary 'Tuscan Blue' thrives best in full sun exposure. It should be planted or placed in a spot where it receives at least six to eight hours of direct sunlight daily. If grown indoors, a south-facing window is ideal to provide the bright light conditions this aromatic herb prefers.
- Temperature
The 'Tuscan Blue' rosemary plant is hardy and prefers temperatures between 60-80 degrees Fahrenheit. It can survive minimum temperatures down to about 30 degrees Fahrenheit but should be protected from frost. During extreme heat, above 90 degrees Fahrenheit, providing some afternoon shade may help prevent stress to the plant.
- Pruning
Pruning rosemary 'Tuscan Blue' encourages healthy growth and maintains its shape. It's best to prune in early spring or after it finishes flowering. Remove any dead or woody stems and shape the plant as you desire. Regular trimming to harvest the aromatic leaves is beneficial, but avoid heavy pruning late in the season, as new growth might not survive winter cold.
- Cleaning
As needed
- Soil
Rosemary 'Tuscan Blue' prefers well-draining, sandy or loamy soil with a pH between 6.0 and 7.0. A good mix would be two parts potting soil to one part coarse sand or perlite. Ensure that the soil allows for quick drainage to prevent root rot.
- Repotting
Rosemary 'Tuscan Blue' should be repotted every 1-2 years, or when it becomes root-bound. Spring is the best time to repot to minimize stress on the plant. Choose a container only one size larger to avoid excess soil moisture.
- Humidity & Misting
Rosemary 'Tuscan Blue' thrives best in low to moderate humidity conditions. It is quite tolerant of dry air, making it suitable for typical indoor environments without the need for additional humidity.
- Suitable locations
Indoor
Place in bright light, water sparingly.
Outdoor
Full sun, well-drained soil, protect from cold.
Hardiness zone
8-10 USDA
- Life cycle
The life cycle of Salvia rosmarinus 'Tuscan Blue', commonly known as Rosemary, begins with seed germination, which is variable and can be enhanced by stratification, though cuttings are more commonly used for propagation. Once established, the seedlings transition into a vegetative growth stage, developing woody stems and needle-like leaves while becoming drought-resistant, evergreen shrubs. The plant then enters a mature phase characterized by prolific leaf growth and the production of aromatic oils, during which blue to violet flowers bloom primarily in spring and summer, attracting pollinators such as bees. After flowering, pollinated flowers can develop into small, dry fruits containing seeds, completing the reproductive cycle. Throughout its life, Rosemary requires ample sunlight, well-drained soil, and minimal watering once established. The plant can live for many years, with proper pruning encouraging bushy growth and preventing it from becoming leggy and woody.
- Propogation
Propogation time
Spring to Summer
The most popular method for propagating Rosemary 'Tuscan Blue' is through semi-hardwood cuttings. This is usually done in late summer. Take a cutting of about 4 to 6 inches (10 to 15 centimeters) long from a healthy, non-flowering stem, stripping the leaves from the bottom half. Dip the cut end into a rooting hormone to encourage root development. Plant the cutting in a pot filled with a mixture of potting soil and sharp sand or perlite, ensuring the leafless part is buried. Keep the soil moist but not waterlogged, and place the pot in a warm area with bright, indirect light. Roots typically develop within 6 to 8 weeks, after which the plant can be gradually acclimatized to outdoor conditions if not already in its final location.