Rosemary Salvia rosmarinus (Prostrata Group) 'Rampant Boule' (Ro)
ABOUT
'Rampant Boule' is a variety of rosemary known for its distinctive trailing and spreading growth habit. This plant features the signature needle-like leaves of rosemary, which are rich in aromatic oils and have a leathery texture. They are typically a deep green color, providing a lush backdrop to the plant's flowers. The leaves often show a slight grayish underside that contrasts subtly with the darker topside. During its blooming period, 'Rampant Boule' produces a profusion of blooms. The flowers are small and tubular, and they commonly appear in hues of blue to violet, often with lighter or white throats that create a delicate two-tone effect. These blooms are usually grouped in whorls toward the terminal ends of the branches, presenting a scattered yet ornamental pattern throughout the plant. The stems of 'Rampant Boule' are sturdy and become increasingly woodsy as they mature. The overall structure of the plant lends itself to cascading over walls or spilling from containers, making it an attractive choice for gardeners looking for a naturally draping element for their landscapes. Complete with its lovely evergreen foliage and pretty blossoms, 'Rampant Boule' rosemary offers both visual charm and practical uses in the garden, along with the warm, pine-like scent that is characteristic of the rosemary plant.
About this plant
NamesFamily
Lamiaceae
Synonyms
Prostrate Rosemary, Creeping Rosemary, Trailing Rosemary
Common names
Rosmarinus officinalis 'Prostratus', Rosmarinus prostratus, Rosmarinus officinalis var. prostratus.
ToxicityTo humans
Rosemary is generally considered non-toxic to humans and is widely used as a culinary herb. However, consuming large quantities of rosemary can potentially cause side effects due to its volatile essential oils and other compounds. Ingesting very large amounts may lead to gastrointestinal irritation, vomiting, or allergic reactions in some individuals. Pregnant women should avoid excessive consumption, as high doses have been traditionally said to potentially cause uterine contractions, though this is not well-supported by scientific evidence.
To pets
Rosemary is generally considered safe for pets in small amounts, as it is commonly found in pet foods as a flavoring. However, in high concentrations, such as in essential oils, it can potentially be toxic to cats and dogs. If a pet ingests a large amount of rosemary, it may experience symptoms such as gastrointestinal upset, including vomiting or diarrhea. Essential oils in particular can be dangerous, and if pets are exposed to concentrated rosemary oil, they may suffer from additional symptoms such as weakness, low blood pressure, or depression. It's important to use rosemary in moderation and avoid exposing pets to concentrated forms.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Green
Flower color
Blue
Height
2 feet [60 cm]
Spread
4 feet [120 cm]
Plant type
Shrub
Hardiness zones
6
Native area
Mediterranean
Benefits
General Benefits- Culinary Use: Rosemary is a popular herb used to flavor various dishes, including meats, breads, and sauces.
- Aromatic Foliage: The plant emits a pleasant fragrance that can enhance the sensory appeal of gardens and landscapes.
- Drought Tolerance: As a Mediterranean herb, rosemary is well adapted to dry conditions, requiring minimal watering once established.
- Attracts Pollinators: Rosemary flowers are attractive to bees and other pollinators, which is beneficial for the ecosystem.
- Low Maintenance: The 'Rampant Boule' variety is particularly hardy, requiring little care beyond basic pruning.
- Erosion Control: This prostrate or creeping variety of rosemary can help stabilize soil and prevent erosion on slopes.
- Landscape Design: Its trailing habit makes it an excellent choice for rock gardens, wall plantings, or as a ground cover.
- Evergreen Foliage: Rosemary (Ro) maintains its leaves throughout the year, providing consistent color and texture to gardens.
Medical Properties- Antioxidant Activity: Rosemary contains compounds such as carnosic acid and rosmarinic acid that exhibit antioxidant properties, potentially helping to protect cells from damage caused by free radicals.
- Anti-inflammatory Effects: The plant has anti-inflammatory compounds that may help reduce inflammation in various parts of the body.
- Memory Enhancement: Rosemary is traditionally associated with improved memory function due to its potential cognitive-stimulating effects.
- Antimicrobial Properties: Essential oil extracted from rosemary has been found to have antimicrobial effects against certain bacteria and fungi.
- Neuroprotective Potential: Certain components in rosemary may offer protection against neurodegenerative diseases by reducing oxidative stress within the brain.
- Digestive Health: Rosemary has been traditionally used to support digestive health and may help alleviate symptoms of indigestion.
- Stress Reduction: The scent of rosemary essential oil is thought to have calming effects that could help lower stress levels.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Natural Wood Preservative: Rosemary oil, which can be extracted from the leaves, can be used as a natural wood preservative, adding a pleasant scent to wooden furniture and protecting it from insects and decay.
- Moth Repellent: Dried rosemary can be used inside sachets to ward off moths from closets and drawers, protecting garments from damage.
- Flavoring for Homemade Cleaning Products: Infused into vinegar or other cleaning agents, rosemary adds a fresh fragrance to DIY natural cleaning products.
- Aromatherapy: The scent of rosemary is believed to help reduce stress and anxiety when used in aromatherapy practices such as diffusing essential oil.
- Cooking Tool: Sturdy rosemary stems can be stripped of leaves and used as aromatic skewers for grilling meat and vegetables, imparting a subtle herb flavor.
- Natural Dye: Rosemary can be used to produce a natural dye for fabrics or crafting, yielding shades of green and brown depending on the mordant.
- Memory Enhancer: Rosemary is often associated with memory and can be used in small bouquets or as a decorative plant in study areas to create an environment conducive to learning and recall.
- Companion Planting: Rosemary can be planted alongside other garden crops as a companion plant to help repel certain pests and insects, promoting healthier vegetables and herbs.
- Decorative Wreaths: The pliable stems of rosemary can be woven into decorative wreaths and garlands, often used during festive seasons to adorn homes with their pleasant aroma.
- Symbolic Gift: Historically associated with remembrance, rosemary can be presented as a gift during memorials or on occasions that honor memories and relationships.
Interesting Facts
Feng ShuiRosemary can be used in Feng Shui for its purifying qualities to enhance clarity and promote healing. It is associated with the Wood element, which supports growth and vitality. Place rosemary in the East sector of a space or garden to foster good health, or in the South to attract fame and recognition.
Zodiac Sign CompitabilityRosemary is not used in astrology practice.
Plant Symbolism- Remembrance: Rosemary is traditionally associated with remembrance and is often used in ceremonies to honor those who have passed away, such as ANZAC Day or Remembrance Day.
- Fidelity: In folklore, rosemary is said to be a symbol of fidelity between lovers. As such, it is sometimes included in wedding decorations and bridal bouquets.
- Wisdom: Rosemary is also emblematic of wisdom and is often connected with scholarly pursuits and the remembrance of learning.
- Protection: Historically, rosemary has been used in various cultures to ward off evil spirits and negative energies. It's believed to offer spiritual protection.
- Healing: Rosemary is known for its health benefits and healing properties, symbolizing the body's and mind's strength and recovery.
- Purification: This herb is often associated with purification processes, such as cleansing spaces of negativity or purifying the air.
WaterRosemary 'Rampant Boule' prefers dry to moderate moisture and should not be overwatered. Water it every one to two weeks, allowing the soil to dry out between waterings. This plant is drought tolerant, so it's better to err on the side of under-watering. When watering, thoroughly soak the soil until water runs out of the drainage holes. An approximate amount would be to use 1 gallon for mature plants in outdoor settings every two weeks during the active growing season.
LightRosemary 'Rampant Boule' thrives best in full sun, receiving at least 6 to 8 hours of direct sunlight each day. The ideal spot for this plant is in an area where it can enjoy unfiltered, natural light throughout the day. It can tolerate partial shade, but too little light may lead to sparse and unhealthy growth.
TemperatureRosemary 'Rampant Boule' prefers moderate to warm conditions and fares well in temperatures ranging from 50°F to 80°F but can survive in temperatures as low as 30°F and as high as 90°F. Avoid exposure to freezing temperatures for extended periods, as it can damage the plant. The ideal temperature range for optimal growth is between 60°F and 70°F.
PruningTrim Rosemary 'Rampant Boule' to maintain its shape and encourage bushier growth. Prune in the early spring or after flowering to remove dead or damaged branches and to promote new growth. Light pruning can be done as needed throughout the year to shape the plant. The best time to do heavy pruning is in early spring before new growth begins.
CleaningAs needed
SoilRosemary 'Rampant Boule' thrives in well-drained soil with a pH between 6.0 and 7.5. A mix of two parts sandy or loamy soil, one part peat moss, and one part perlite or pumice is ideal. Ensure the soil allows for proper drainage to prevent root rot.
RepottingRosemary 'Rampant Boule' should be repotted every 1-2 years or if it outgrows its current pot. The best time to repot is in the spring.
Humidity & MistingRosemary 'Rampant Boule' prefers a dry climate and is tolerant of low humidity levels; typical indoor levels are usually adequate.
Suitable locationsIndoor
For indoor growth, position in bright light and avoid overwatering.
Outdoor
Plant in full sun, protect from severe frost, and ensure soil drainage.
Hardiness zone
8-10 USDA
Life cycleSalvia rosmarinus 'Rampant Boule', commonly known as creeping rosemary, begins its life cycle with seed germination, which can be slow and may require several weeks. After germination, the plant enters the seedling stage, producing several pairs of true leaves, and begins to establish a root system. As it matures into the vegetative growth stage, creeping rosemary spreads outwards with its creeping stems, which can root where they come into contact with the soil, forming a dense, evergreen mat. The flowering stage usually occurs in spring to summer when the plant produces small, pale blue to white flowers attractive to bees and other pollinators. After pollination, the flowers develop into tiny, non-fleshy fruits containing seeds, completing its reproductive cycle. Creeping rosemary continues to grow and spread, potentially living for several years if conditions are favorable, and may require pruning to maintain its shape and encourage denser growth.
PropogationPropogation time
Spring to Summer
The most popular method of propagating Rosemary, specifically the Salvia rosmarinus (Prostrata Group) 'Rampant Boule' variety, is through stem cuttings. This is ideally done in late spring or early summer when growth is most vigorous. Take a cutting of about 4 to 6 inches (10 to 15 centimeters) from a healthy, non-flowering stem, ensuring at least a couple of leaf nodes are present. Remove the leaves from the bottom half of the cutting. Dipping the cut end in rooting hormone can help stimulate root growth, although it's not always necessary. Then, plant the cutting in a mixture of peat and perlite or in well-draining soil, ensuring that the leafless part of the stem is buried. Provide adequate moisture and warmth, and in a few weeks, the cutting should develop roots, at which point it can eventually be transplanted.
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