Dahlia Dahlia 'Otto's Thrill' (D)

👤 Non-toxic to humans
🐾 Non-toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Hard-care
dahlia 'Otto's Thrill'


Dahlia 'Otto's Thrill' is known for its striking, large, and showy flowers. The blooms exhibit a stunning pink, sometimes with a blend of softer pastel shades, evoking a sense of gentle luxury. Each flower is made up of numerous layered petals, which are arranged in a somewhat symmetrical pattern, contributing to the flower's full and lush appearance. The petals can have a rounded or slightly pointy tip, giving the flowers a plush and inviting texture. The bloom's center is less visible, often tucked deep within the layers of petals. The foliage of the Dahlia 'Otto's Thrill' provides a pleasing backdrop to the ornate flowers. Leaves are typically deep green, which creates a striking contrast against the vibrant pink of the petals, highlighting the color intensity of the blooms. Stems are sturdy and robust, necessary to support the weight of the heavy flower heads, which often necessitate staking to prevent them from drooping. Overall, the appearance of Dahlia 'Otto's Thrill' is one of spectacular color and form, a show-stopper in any decorative garden or as part of a floral display.

Plant Info
Common Problems

About this plant

  • memoNames

    • Synonyms

      Dahlia, Garden Dahlia, Otto's Thrill Dahlia.

    • Common names

      Dahlia 'Otto's Thrill'

  • skullToxicity

    • To humans

      Dahlia 'Otto's Thrill' typically is not considered toxic to humans. There are no well-documented cases of dahlia poisoning leading to serious consequences in humans. However, as with any plant material, individual sensitivities can vary, and ingestion can cause mild stomach upset in some cases.

    • To pets

      Dahlias, including the variety 'Otto's Thrill', are generally considered non-toxic to pets such as dogs and cats. They are not listed by the American Society for the Prevention of Cruelty to Animals (ASPCA) as toxic plants. Therefore, pets that ingest dahlia may not display any symptoms of poisoning, though individual sensitivities can vary and mild gastrointestinal upset could potentially occur if ingested in larger quantities.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      4 feet [1.2 meters]

    • Spread

      2 feet [0.6 meters]

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Ornamental Appeal: Dahlia 'Otto's Thrill' offers stunning, large pink blooms that add aesthetic value to gardens and landscapes.
    • Pollinator Attraction: The flowers attract bees, butterflies, and other pollinators, supporting biodiversity.
    • Cut Flower Use: The blooms have a long vase life, making them perfect for floral arrangements and bouquets.
    • Easy Propagation: It can be easily propagated through division, allowing gardeners to spread the plant throughout their garden.
    • Seasonal Interest: This dahlia provides late summer to fall interest when many other plants have finished blooming.
    • Variety of Uses: Suitable for borders, containers, and as a focal point in a garden bed.
    • Community Engagement: Participating in dahlia shows and societies can connect gardeners and promote community interaction.

  • 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

    • Garden Photography - With their vivid and large blooms, Otto's Thrill Dahlias are outstanding subjects for garden photographers looking to capture the beauty of ornamental flowers.
    • Fabric Dyeing - The vibrant colors of the Dahlia petals can be used in natural fabric dyeing processes to impart unique hues onto textiles.
    • Artistic Inspiration - Artists may use Otto's Thrill Dahlias as inspiration for paintings, illustrations, and other art forms due to their striking appearance and variety of colors.
    • Decorative Edible Garnish - Although not commonly consumed, Dahlia petals are edible and can be used to add color and a touch of elegance as a garnish for special dishes.
    • Color Teaching Aid - The variety of colors in Otto's Thrill Dahlias can be used as a tool for teaching children about different colors and shades in nature.
    • Feng Shui - In the practice of Feng Shui, brightly colored flowers like Dahlias can be used to add energy and positive vibes to a space.
    • Floristry Workshops - Otto's Thrill Dahlias can be used in floristry classes to teach students about floral arrangement and design due to their size and structure.
    • Table Centerpieces - The substantial size and attractive form of Otto's Thrill Dahlias make them excellent focal points as table centerpieces during celebrations and events.
    • Seasonal Displays - With their peak bloom in late summer to fall, Otto's Thrill Dahlias are perfect for creating vibrant seasonal displays in both public and private gardens.
    • Crafting - The dried petals and whole flowers of Dahlias can be used in various crafting projects such as making natural potpourri or decorative flower pressing.

Interesting Facts

  • bedFeng Shui

    The Dahlia is not used in Feng Shui practice.

  • spiralPlant Symbolism

    • Grace: The elegant form of Dahlia 'Otto's Thrill' is often associated with poise and composure.
    • Diversity: Dahlias come in various forms and colors, symbolizing the beauty of diversity and variety in our lives.
    • Change: The Dahlia's blooming season in late summer and fall can represent the inevitable changes in life.
    • Commitment: With its robust growing habits, the Dahlia often signifies a lasting bond and commitment between two people.
    • Warning: In the Victorian language of flowers, Dahlias can also signify a cautionary stance or warning about a situation.

Every 3-4 days
2500 - 10000 Lux
Every year
Spring-Early Summer
As needed
  • water dropWater

    Dahlias, including 'Otto's Thrill', should be watered thoroughly, providing deep irrigation to encourage root development. They require an ample supply of water during the growing season, about 1-2 inches of water per week, either from rainfall or supplemental watering. It's best to water early in the day so that the foliage has time to dry out, which helps prevent disease. When watering, soak the soil around the plant to a depth of 6-8 inches. During particularly dry spells, you may need to water 2-3 times per week, using up to 2 gallons of water per plant, depending on the size.

  • sunLight

    Dahlias like 'Otto's Thrill' thrive in a location with full sun, which means they need at least 6 to 8 hours of direct sunlight each day. The best spot for these plants is an area that receives morning sunlight and is protected from the strong afternoon sun in very hot climates. Partial shade in the afternoon is beneficial to prevent the petals from fading or scorching during the peak summer heat.

  • thermometerTemperature

    The ideal temperature range for Dahlia 'Otto's Thrill' is between 60°F and 70°F. Dahlias can survive temperatures as low as the upper 50s°F, but growth may be slower. It is important to protect them from temperatures below 50°F, as cold temperatures can damage or kill the plant. Dahlias prefer warm days and cooler nights and can handle temperatures up to about 90°F, though extreme heat may stress the plants.

  • scissorsPruning

    Prune Dahlias such as 'Otto's Thrill' to promote bushier growth, larger flowers, and to maintain plant health. Deadheading spent blooms regularly encourages more blooms. During the growing season, pinch back the main stem to encourage lateral branching. Pruning is best done when the plant is about 16 inches tall, and it should only involve the top few inches. After the first frost in autumn, cut back the foliage to the ground as the plant dies back.

  • broomCleaning

    As needed

  • bambooSoil

    For Dahlia 'Otto's Thrill', a well-draining soil mix is essential, incorporating loam, peat, and sand or perlite for aeration. Aim for a slightly acidic to neutral pH of 6.5 to 7.0. Add organic matter such as compost to enhance fertility and structure.

  • plantRepotting

    Dahlias, including 'Otto's Thrill', generally do not need to be repotted often as they are not usually grown as permanent container plants. They are typically planted annually from tubers that are dug up and stored during the winter.

  • water dropsHumidity & Misting

    Dahlias like 'Otto's Thrill' prefer moderate humidity levels and do not require high humidity. Ensure good air circulation around the plants to prevent issues with dampness and pests.

  • pinSuitable locations

    • Indoor

      Place in bright, indirect light and ensure pot has good drainage.

    • Outdoor

      Full sun, rich soil, and spacing of 18-24 inches apart.

    • Hardiness zone

      8-10 USDA

  • circleLife cycle

    Otto's Thrill Dahlia begins its life cycle when the tuber is planted in the ground after the last frost, with the eye of the tuber facing upwards to allow sprouting. The plant then grows stems and leaves and undergoes vegetative growth, where it develops a strong stem and foliage system to support its large blossoms. During the flowering stage, Otto's Thrill Dahlia produces its characteristic large double peony-like pink flowers that attract pollinators. After blooming, which typically occurs from midsummer until the first autumn frost, the plant sets seeds, although cultivation is more commonly done asexually through tuber division. As temperatures drop, the plant enters dormancy; the above-ground portion dies back, and the tubers can be dug up, stored, and overwintered in a cool, dry place. The life cycle is completed the following spring when the stored tubers are replanted, giving rise to new plants.

  • sproutPropogation

    • Propogation time

      Spring-Early Summer

    • The popular method for propagating Dahlia 'Otto's Thrill' is through tuber division, which is best performed in spring when the plant is beginning to sprout new shoots. To propagate by division, a gardener must first carefully dig up the clump of dahlia tubers after the foliage has died back and the tubers have been left in the ground to cure for a few days. The tubers are then gently separated, ensuring that each division has at least one eye, which is a small bump or nub from where the new growth will emerge. These divisions can then be planted directly into the garden, at a depth of about 6 to 8 inches (15-20 cm), considering that each tuber has sufficient space to grow. It's essential to handle the tubers delicately to avoid damaging the eyes, as this could hinder the plant's growth. After planting, the divisions should be watered lightly to settle the soil around them and then regularly as they establish themselves.