Rose Mallow Lavatera trimestris

👤 Non-toxic to humans
🐾 Non-toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
royal mallow


Lavatera trimestris, commonly known as the annual mallow or rose mallow, is an ornamental plant that exhibits a bushy and upright form. It bears broad, palmately lobed leaves that vary from light to a darker green hue. The foliage offers a pleasant backdrop for the plant's most striking feature—its flowers. The flowers are large, showy, and hibiscus-like with a delicate, crepe-paper texture. They typically appear in shades of pink, rose, and white, often with a deeper color or veins radiating from the center. The center of each flower usually has a darker eye, contributing to a pronounced contrast. The blooms possess a gentle, satiny luster and are often abundant, dotting the plant in a profuse display that can be quite stunning. Overall, annual mallow has a soft, romantic appearance and can add a splash of pastel elegance to any garden setting.

Plant Info
Common Problems

About this plant

  • memoNames

    • Synonyms

      Annual Mallow, Rose Mallow, Royal Mallow, Regal Mallow, Beautyt Mallow.

    • Common names

      Althaea trimestris, Malva trimestris.

  • skullToxicity

    • To humans

      The Lavatera trimestris, commonly known as the Rose Mallow, is not widely regarded as a toxic plant to humans. There is no well-documented evidence of toxicity in humans from ingesting or handling this plant. It does not typically cause poisoning and there have been no significant reports of adverse effects following ingestion. Therefore, symptoms of poisoning and consequences are not generally established for this plant when it comes to human health.

    • To pets

      Rose Mallow, or Lavatera trimestris, is not commonly known to be toxic to pets. It is not listed among the plants that are typically harmful to dogs, cats, or other animals. As such, there are no specific symptoms of poisoning associated with this plant reported for pets. Ingesting parts of this plant is unlikely to result in toxic consequences for pets. However, as with any non-food plant, ingestion in large quantities may cause gastrointestinal upset or other non-toxic related symptoms due to the plant material itself, not due to toxicity.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      3-6 feet (0.9-1.8 meters)

    • Spread

      2-3 feet (0.6-0.9 meters)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Ornamental Value: Lavatera trimestris, commonly known as the "annual mallow", is highly valued for its large, showy flowers that enhance the visual appeal of gardens and landscapes.
    • Attracts Pollinators: The blossoms attract bees, butterflies, and other beneficial insects, promoting pollination of surrounding plants.
    • Drought Tolerance: Once established, annual mallow is relatively drought-tolerant, making it suitable for dry climates and water-wise gardens.
    • Easy to Grow: It is easy to cultivate from seed and generally requires minimal maintenance, making it a good choice for novice gardeners.
    • Fast-Growing: As an annual, Lavatera trimestris grows quickly and can provide a quick display of color within a single growing season.
    • Versatile Landscaping: The plant can be used in a variety of garden settings, including borders, containers, and as a temporary hedge or screen.

  • medicalMedical Properties

    This plant is not used for medical purposes.

  • windAir-purifying Qualities

    This plant is not specifically known for air purifying qualities.

  • leavesOther Uses

    • Textile Dye: Lavatera trimestris can be used to produce a range of natural dyes for textiles, giving fabrics subtle shades of pink or mauve depending on the mordant used.
    • Companion Planting: Gardeners sometimes plant Lavatera trimestris among vegetables to attract pollinators and beneficial insects that help in the control of pests.
    • Decorative Mulch: The dried petals and leaves of Lavatera trimestris can be used as a decorative mulch in garden beds, providing a splash of color while suppressing weeds.
    • Craft Material: The attractive flowers and foliage of Lavatera trimestris can be used in dried floral arrangements and other craft projects for their aesthetic appeal.
    • Temporary Fencing: With its quick growth and bushy habit, Lavatera trimestris can be planted to create a temporary visual barrier or windbreak in the garden.
    • Ink Production: The flowers of Lavatera trimestris can be used as a natural source of pigment for the production of plant-based inks for art or writing purposes.
    • Edible Flowers: The flowers of Lavatera trimestris are edible and can be used as a colorful garnish for salads and desserts, adding a mild, vegetal flavor.
    • Photography Backdrops: The vibrant blooms of Lavatera trimestris can provide a beautiful, natural backdrop for outdoor portrait photography.
    • Bioindicator Species: Lavatera trimestris can serve as a bioindicator, with its growth patterns and health indicating soil quality and the presence of certain nutrients or contaminants.
    • Soil Erosion Control: Due to its fast growth and dense root system, Lavatera trimestris can be planted on slopes or areas prone to erosion to help stabilize the soil.

Interesting Facts

  • bedFeng Shui

    The plant Lavatera trimestris, commonly known as the Tree Mallow, is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Tree Mallow is not used in astrology practice.

  • spiralPlant Symbolism

    • Delicate Beauty: The soft, blushing petals of the Lavatera trimestris, commonly known as the annual mallow, often symbolize a gentle and understated beauty.
    • Femininity: With its pink hues and soft texture, this plant is often associated with feminine qualities and the celebration of womanhood.
    • Love and Affection: As with many flowers, the annual mallow can represent love and affection, making it a gift between loved ones on special occasions.
    • Regeneration: The plant's ability to bloom prolifically is often seen as a symbol of regeneration and the continuous cycle of life.
    • Protection: Historically, mallows have been considered to have protective qualities, thus Lavatera trimestris may carry this symbolism, offering safety and shelter.

Every 1-2 weeks
2500 - 10000 Lux
Every 2-3 years
Spring to early summer
As needed
  • water dropWater

    The common mallow, also known as Lavatera trimestris, prefers consistent moisture and should be watered deeply once a week, providing a couple of gallons per plant depending on soil type and weather conditions. During hot summer days, it may require additional water to prevent the soil from completely drying out. It's important to avoid overhead watering to reduce the risk of leaf diseases; instead, water at the base of the plant. Cut back on watering as the plant matures and during the fall to encourage sturdiness.

  • sunLight

    The common mallow thrives in a location that receives full sun exposure for at least six to eight hours daily. While it can tolerate some light shade, optimal blooming and growth are achieved in a sunny spot. An open area that is not shaded by taller plants or structures is ideal for the common mallow.

  • thermometerTemperature

    Common mallow grows best in a temperature range between 50°F and 85°F. It can survive minimum temperatures down to around 40°F but will not endure frost conditions. The ideal growing conditions for these plants are in areas where temperatures are consistently warm, though not excessively hot.

  • scissorsPruning

    Common mallow should be pruned to remove dead or damaged growth and to shape the plant, which encourages new growth and flowering. Pruning is often done in late winter or early spring, before new growth begins. Regular deadheading of spent blooms can also be performed to maintain a tidy appearance and promote continuous flowering.

  • broomCleaning

    As needed

  • bambooSoil

    The best soil mix for Rose Mallow (Lavatera trimestris) consists of a light, well-draining soil with a pH range of 6.0 to 7.0. A mix incorporating equal parts of loam, peat, and sand can promote healthy growth. Amending with compost can also provide necessary nutrients.

  • plantRepotting

    Rose Mallow (Lavatera trimestris) typically doesn't require frequent repotting as it is an annual plant. It is often grown from seed each year, so repotting is not commonly practiced for this species.

  • water dropsHumidity & Misting

    Rose Mallow (Lavatera trimestris) tolerates a wide range of humidity levels and generally does well in average outdoor humidity conditions without the need for specific adjustment.

  • pinSuitable locations

    • Indoor

      Place Rose Mallow in bright light and follow regular care.

    • Outdoor

      Plant Rose Mallow in full sun, well-draining soil.

    • Hardiness zone

      7-10 USDA

  • circleLife cycle

    Lavatera trimestris, commonly known as annual mallow, begins its life cycle as a seed, which can be sown directly into well-drained soil after the last frost date. Upon germination, which can take 1-2 weeks, the seedling emerges with cotyledons before developing its true leaves. In the vegetative stage, the plant develops a robust stem and foliage, preparing for flowering. Flowering typically occurs in summer, and the plant produces showy, funnel-shaped blooms which may attract pollinators such as bees and butterflies. After pollination, the flowers develop into dry, disk-shaped fruits, which contain the seeds for the next generation. As an annual, after setting seed, the plant completes its life cycle by dying, while the seeds overwinter to germinate the following spring.

  • sproutPropogation

    • Propogation time

      Spring to early summer

    • Propogation: Lavatera trimestris, commonly known as the annual mallow or rose mallow, is most commonly propagated through seeds. The ideal time to sow the seeds is in spring after the last frost has passed, when the soil has begun to warm up. An effective method is to scatter the seeds thinly onto well-drained soil in a sunny location, covering them with a light layer of soil about 1/4 inch (approximately 6 millimeters) deep. Water the sown area gently but thoroughly to moisten the soil without causing the seeds to be washed away. Germination usually occurs within 2-3 weeks, and it is important to keep the soil consistently moist during this period. Once the seedlings are large enough to handle, they can be thinned out or transplanted to their final growing positions, ensuring they have ample space to develop.