Mum Chrysanthemum 'Ruby Mound' (21c)

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
chrysanthemum 'Ruby Mound'


The Chrysanthemum 'Ruby Mound', often simply known as the mum, is a cultivar with an exquisite appearance that stands out with its deep ruby or burgundy-colored flowers. These flowers are full and rounded, with layers of densely packed petals that create a cushion-like effect, hence the name 'mound'. The blossom's individual petals are somewhat curved, lending a soft texture and visual interest to the flower heads. As the name implies, the ruby shade is the star of the show, making it a popular choice for gardeners seeking to add a splash of rich autumnal color to their landscape. The foliage of the Chrysanthemum 'Ruby Mound' provides a lush green background against which the vibrancy of the flowers is further highlighted. This contrast not only enhances the visual appeal of the plant but also contributes to a fuller looking presentation.

Plant Info
Common Problems

About this plant

  • memoNames

    • Synonyms

      Ruby Mound Hardy Chrysanthemum, Ruby Mound Mum, Ruby Mound Garden Mum

    • Common names

      Dendranthema grandiflorum 'Ruby Mound', Chrysanthemum morifolium 'Ruby Mound'

  • skullToxicity

    • To humans

      The common Chrysanthemum is generally considered to have low toxicity to humans. However, it can cause dermatitis in sensitive individuals when they come into contact with the plant's sap or flowers. If ingested, the plant may cause mild gastrointestinal symptoms like nausea, vomiting, and diarrhea. Ingesting large quantities could potentially lead to more severe symptoms, but this is relatively uncommon since the plant is not typically consumed by humans.

    • To pets

      For pets, Chrysanthemums are toxic. Symptoms of poisoning in pets can include vomiting, diarrhea, hypersalivation, incoordination, and dermatitis. The severity of the symptoms can vary based on the amount ingested and the sensitivity of the individual pet. Cats are particularly sensitive to pyrethrins and sesquiterpene lactones found in Chrysanthemums, and when ingested these compounds can lead to more severe reactions including neurological symptoms such as tremors and seizures. Immediate veterinary care is recommended if a pet has consumed any part of a Chrysanthemum.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      1-2 feet (30-60 cm)

    • Spread

      1-2 feet (30-60 cm)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Attracts Pollinators: 'Ruby Mound' serves as a nectar source for bees and butterflies, enhancing pollination in gardens.
    • Aesthetic Appeal: With its deep red flowers, this cultivar adds vibrant color and visual interest to landscapes and gardens.
    • Long Blooming Period: It has a lengthy flowering season that extends from late summer to fall, providing color when many other plants are declining.
    • Easy to Grow: 'Ruby Mound' is known for being relatively easy to cultivate, making it suitable for gardeners of all skill levels.
    • Drought Tolerance: This variety demonstrates a degree of drought resistance once established, requiring less water than some other plants.
    • Versatility: The plant is suitable for borders, garden beds, and as a cut flower in floral arrangements.
    • Fall Interest: 'Ruby Mound' extends the garden's interest into the fall season when many other plants have finished blooming.
    • Cold Hardy: It is able to survive and thrive in cooler temperatures, making it suitable for gardens in varying climates.

  • 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

    • Floral Arrangements - The Chrysanthemum 'Ruby Mound' can be used fresh or dried in floral arrangements for its deep red color and full, rounded blooms.
    • Photography - This variety of chrysanthemum is often chosen by photographers for its vibrant color and texture to create beautiful floral photography.
    • Color Dye - The petals can be used to create a natural dye for fabrics, giving them a soft red hue.
    • Artistic Inspiration - Artists may use the 'Ruby Mound' as a subject in paintings, sketches, and other artworks due to its distinctive shape and color.
    • Culinary Garnish - Though not commonly consumed, the petals of some chrysanthemum species can be used as an edible garnish for a unique touch to culinary dishes.
    • Companion Planting - The 'Ruby Mound' can be used in gardens to repel certain pests, benefiting other plants grown nearby.
    • Tea Rituals - In some cultures, although unrelated to health benefits, the chrysanthemum might be included in tea rituals purely for aesthetics or tradition.
    • Mood Enhancement - The presence of vibrant 'Ruby Mound' chrysanthemums might be used in spaces like spas or yoga studios to enhance the ambiance with their color.
    • Event Decor - Due to their showy appearance and association with positivity, these flowers are often used to decorate venues for celebrations and events.
    • Plant Sculpting - Skilled gardeners can shape 'Ruby Mound' chrysanthemums into topiaries and other plant sculptures for ornamental garden designs.

Interesting Facts

  • bedFeng Shui

    The Chrysanthemum is often associated with happiness and well-being in Feng Shui, so placing a Chrysanthemum 'Ruby Mound' in the home is believed to bring positive energy, foster relaxation, and act as an antidote to stress. Displaying Chrysanthemums in living areas is also considered to enhance longevity and health.

  • aquariusZodiac Sign Compitability

    The Chrysanthemum is not used in astrology practice.

  • spiralPlant Symbolism

    • Longevity: The Chrysanthemum is often associated with a long and healthy life due to its hardiness and the longevity of its blooms.
    • Joy and Optimism: The bright and cheerful appearance of the Chrysanthemum 'Ruby Mound' conveys feelings of joy and optimism.
    • Loyalty and Devotion: In some cultures, giving a Chrysanthemum represents loyalty and devotion, reflecting the steadfast nature of the flower.
    • Nobility: In various historical periods, particularly in Asia, the Chrysanthemum has been a symbol of nobility and elegance.
    • Death and Grief: In some European countries, Chrysanthemums are used to honor the deceased and express grief, symbolizing the beauty and transience of life.
    • Rejuvenation and Recovery: The Chrysanthemum is sometimes used to wish someone a speedy recovery, representing the rejuvenating powers of nature.
    • Friendship: As a gift, Chrysanthemums can symbolize friendship and well-wishing, often included in bouquets to express support.

Every 7-10 days
2500 - 10000 Lux
Every year
Early Spring
As needed
  • water dropWater

    Mums should be watered regularly, keeping the soil consistently moist but not soggy. During active growth, especially in the spring and summer months, watering may need to occur once every two to three days, depending on weather conditions. Mums require about 1 inch of water per week, which translates to about 0.6 gallons per square yard of soil. Water the plant at the base to avoid wetting the foliage, which can lead to disease. Reduce watering in the fall as the plant prepares for dormancy.

  • sunLight

    The Chrysanthemum, commonly known as Mum, thrives in full sun conditions. It should be placed where it can receive at least 6 hours of direct sunlight per day. The ideal spot for a Mum is in a location that offers bright, unfiltered sunlight throughout most of the day. However, in regions with very hot summers, some afternoon shade can be beneficial to prevent scorching.

  • thermometerTemperature

    Mums prefer moderate temperatures and do best in an environment where the temperature is consistently between 60°F and 75°F. They can withstand slight dips into the upper 50s°F at night but should be protected from frost. The maximum temperature for sustaining healthy Mums should not exceed 90°F, and at the minimum, they can survive brief periods of cold down to about 32°F.

  • scissorsPruning

    Prune Mums to encourage bushier growth and more robust flowering. The best time for pruning is in early spring when new growth begins, and then again in early summer by pinching back the tips to promote branching. Regular deadheading of spent flowers during the blooming season will also help encourage more blooms. Pruning is typically done once to twice a season depending on the plant's growth rate and form.

  • broomCleaning

    As needed

  • bambooSoil

    Mums like well-draining soil with high organic matter content. A mix of two parts peat moss, one part perlite, and one part compost works well. They prefer a slightly acidic to neutral pH, around 6.0-7.0.

  • plantRepotting

    Garden Mums should be repotted every one to two years. It's best done in the spring as new growth begins.

  • water dropsHumidity & Misting

    Garden Mums thrive best in moderate humidity conditions, typically around 40-60%.

  • pinSuitable locations

    • Indoor

      Ensure bright light, well-draining soil, and moderate humidity.

    • Outdoor

      Plant in full sun, well-draining soil, and water regularly.

    • Hardiness zone

      5-9 USDA

  • circleLife cycle

    The Hardy Mum 'Ruby Mound' begins its life cycle as a seed or more commonly as a division from a mature plant. After planting, the seeds or divisions germinate or establish roots and shoots in the spring. The plant enters a vegetative stage where it focuses on leaf growth, developing a full, bushy appearance throughout the spring and early summer. As the days start to shorten after the summer solstice, the 'Ruby Mound' enters the budding stage, setting flower buds that will bloom into the characteristic vibrant red flowers in late summer to fall. After blooming, the flowers eventually wither, and the plant enters a period of dormancy over winter, especially in colder climates where it can survive with protective mulching. With the return of warmer weather in spring, the plant may regrow from the base to start its cycle anew, provided it was well-maintained and insulated against harsh winter conditions.

  • sproutPropogation

    • Propogation time

      Early Spring

    • The Chrysanthemum 'Ruby Mound', commonly known as mums, is typically propagated through division which is best done in the spring. To propagate mums via division, one should carefully dig up an established clump of the plant after the danger of frost has passed and when new growth appears. The clump should be separated into smaller sections, ensuring that each division has a portion of roots and several shoots. These new divisions can be replanted at the same depth they were originally growing, spaced approximately 18 to 24 inches (45 to 60 centimeters) apart to allow for ample growth. Water the new plants thoroughly to help establish them. Division is a quick and efficient way to create more mums and also helps rejuvenate older plants that may have become too large or woody at their center.