Dahlia Dahlia 'City of Leiden' (S-c)

👤 Non-toxic to humans
🐾 Non-toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Hard-care
dahlia 'City of Leiden'


The Dahlia 'City of Leiden' (S-c) is a vibrant and eye-catching flowering plant known for its decorative blooms. The flowers are the standout feature, with a symmetrical arrangement of petals often showcasing a warm, rich hue. The petals themselves can exhibit a striking gradient of color, transitioning from a deep shade at their base to a lighter tone at their tips, lending a dynamic and fiery aspect to the bloom. The structure of the flower is semi-cactus in form, which means the petals tend to be rolled or pointed, giving them a quilled appearance that adds to their dramatic flair. This structural characteristic of the petals also contributes to the flower's overall texture and depth, making them appear lush and full. As for foliage, the plant has lush green leaves that provide a contrasting backdrop to the colorful flowers. The leaves are typically of an ovate shape with subtle serration on the edges, which further enhances the visual composition of the plant. The Dahlia 'City of Leiden' blooms in the growing season and is a favorite among gardeners and flower enthusiasts for its striking aesthetic and the vivacious color it adds to any garden or floral arrangement.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Garden Dahlia, Dahlia

    • Common names

      Dahlia 'City of Leiden' (S-c).

  • skullToxicity

    • To humans

      Dahlias, including the 'City of Leiden' variety, are generally considered non-toxic to humans. However, as with any plant, individual allergies or sensitivities can occur. Ingesting any part of the dahlia plant is unlikely to cause serious poisoning, but it could potentially result in mild gastrointestinal discomfort. If a person ingests a dahlia and experiences symptoms, it is advisable to consult a medical professional.

    • To pets

      Dahlias, including the 'City of Leiden' variety, are not toxic to pets. While they are not known to cause serious harm if ingested, consumption of plant material can potentially cause mild gastrointestinal upset in some pets, such as vomiting or diarrhea. If your pet consumes a dahlia and shows adverse reactions, it is sensible to contact a veterinarian.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      4 feet [1.22 meters]

    • Spread

      2 feet [0.61 meters]

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Aesthetic Appeal: Dahlias such as 'City of Leiden' offer a vibrant splash of color to gardens and landscapes.
    • Variety of Uses: They are suitable for borders, flower beds, and can be used as cut flowers for indoor decoration.
    • Pollinator Attractant: Dahlias attract bees, butterflies, and other beneficial insects, aiding in the pollination of gardens.
    • Easy Propagation: They can be propagated easily through division, allowing gardeners to expand their collection without additional cost.
    • Long Blooming Season: Dahlias have a lengthy flowering period from summer into fall, providing sustained beauty in the garden.
    • Customizable Growth: With pruning and staking, gardeners can control the size and shape of Dahlia plants.
    • Community Engagement: Dahlia enthusiasts often share tubers and participate in societies and competitions, promoting social 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

    • Dahlias can be used as natural dye sources for fabrics, with petals offering a range of beautiful colors.
    • They make for compelling artistic subjects, not just in still-life paintings but also in detailed botanical illustration.
    • Crushed dahlia petals can be incorporated into natural homemade cosmetics, such as blushes and lip stains.
    • Edible varieties of dahlias provide tubers that can be cooked like root vegetables and used in various culinary dishes.
    • Dahlia blooms can be used in the art of flower arranging, aiding in color therapy through their vibrant hues and helping to create visually soothing environments.
    • They have been utilized in ceremonies and cultural festivals as symbols of elegance and dignity, playing a role in the visual storytelling of events.
    • In photography, dahlias serve as stunning subjects for macro photography, teaching techniques like focus stacking and lighting.
    • Used in fashion design, their shapes and colors can inspire fabric patterns and textures in clothing and accessories.
    • Dried dahlia petals can be a component in crafting eco-friendly confetti for celebrations or as a decorative element in paper making.
    • Petals of dahlias can add decorative flair to gourmet dishes and desserts when used as edible garnishes.

Interesting Facts

  • bedFeng Shui

    The Dahlia is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Dahlia is not used in astrology practice.

  • spiralPlant Symbolism

    • Elegance and Dignity: The Dahlia's intricate petals and striking form often represent a dignified elegance, portraying one's commitment to remain graceful under pressure.
    • Creativity and Inner Strength: Dahlias, with their vibrant colors and varied shapes, symbolize the ability to remain strong and creative in adverse situations.
    • Change and Variety: As the Dahlia comes in many colors and forms, it can reflect personal growth and the ability to adapt to new challenges.
    • Commitment and Bond: The flowers' longevity and the multitude of petals can signify a lasting bond and the enduring commitment between two people.
    • Wealth and Prosperity: Dahlias have been known to represent wealth and prosperity due to their full-bodied blooms and the richness of their hues.

Every 3-4 days
2500 - 10000 Lux
Every year
Spring-Early Summer
After flowering
  • water dropWater

    Dahlias should be watered deeply, with a focus on keeping the soil moist but not soggy. A general rule for 'City of Leiden' dahlias is to provide about 1 to 2 inches of water per week, either through rainfall or manual watering. In the heat of the summer, you may need to water the plants two to three times per week, especially if the weather is very dry or hot. Always water at the base of the plant to help prevent fungal diseases which can arise from wet foliage. During particularly hot spells, you might need to increase watering frequency, but be sure to allow the soil to dry out slightly between watering sessions.

  • sunLight

    Dahlias thrive in a location with full sun, which means they need at least 6 to 8 hours of direct sunlight each day. 'City of Leiden' dahlias will perform the best when planted in an area that receives ample morning sunlight and some protection from the intense heat of the late afternoon sun. Avoid placing them in full shade as this will reduce blooming and can lead to leggy growth.

  • thermometerTemperature

    'City of Leiden' dahlias grow best in temperate conditions and prefer a range of 60-75°F. They can survive a temporary dip to around 50°F but colder temperatures can damage the plant. Dahlia tubers should not be planted outside until all danger of frost has passed, normally when the soil temperature reaches about 60°F. They should be lifted or protected once the temperature drops consistently below 50°F in fall.

  • scissorsPruning

    Pruning dahlias, such as the 'City of Leiden', is essential for maintaining plant vigor and encouraging prolific blooming. Pinch the main stem when the plant is about 12 inches tall to promote bushier growth and more stems, which means more flowers. Deadhead spent flowers regularly to encourage continued blooming throughout the season. After the first frost in fall, cut back the foliage and stems to a few inches above the soil line as the plants go dormant.

  • broomCleaning

    As needed

  • bambooSoil

    Dahlias require well-draining soil with a neutral to slightly acidic pH between 6.5 and 7.0. A good soil mix for Dahlia 'City of Leiden' should consist of a combination of loam, peat or compost, and sand or perlite to ensure proper drainage. It's important to avoid soil that retains too much moisture, as this can cause tuber rot.

  • plantRepotting

    Dahlias, including the 'City of Leiden' variety, typically do not need to be repotted regularly as they are not often grown as permanent container plants. Instead, their tubers are usually lifted and stored during the winter and then replanted each spring after the last frost. If grown in containers, they may be repotted when they outgrow their current pot or to refresh the soil annually.

  • water dropsHumidity & Misting

    Dahlias like the 'City of Leiden' prefer moderate humidity levels but are quite adaptable to various conditions as they are not humidity-sensitive plants. Maintaining average room humidity will suffice, but ensure good air circulation around the plants to prevent any fungal diseases.

  • pinSuitable locations

    • Indoor

      Ensure bright light, moderate humidity, and good air circulation.

    • Outdoor

      Place in full sun, shelter from strong winds, well-draining soil.

    • Hardiness zone

      8-11 USDA

  • circleLife cycle

    The Dahlia 'City of Leiden' begins its life cycle as a set of tubers planted in the spring after the last frost, in rich, well-drained soil. The tubers sprout and grow into lush, bushy plants with dark green foliage, and by mid-summer, the plant produces its first showy, vibrant flowers. These star-shaped blooms may continue until the first fall frost, attracting pollinators to the garden. As temperatures drop, the plant's above-ground growth starts to wilt and die back; at this stage, the tubers can be dug up and stored in a cool, dry place for the winter. During the winter dormancy, the tubers rest and conserve energy for the next growing season. The cycle repeats when the tubers are replanted the following spring, producing a new set of dahlia plants that will mature, flower, and propagate through their own tubers.

  • sproutPropogation

    • Propogation time

      Spring-Early Summer

    • The best time to propagate Dahlia 'City of Leiden', more commonly known as just Dahlia, is in the spring after the last frost when the soil has warmed up enough to promote growth. The most popular method of propagation is by dividing tubers. Each tuber or tuber cluster that has at least one eye can develop into a new plant. Prior to planting, the divided tuber pieces are often allowed to dry for a day or two to form a callous over the cut surface, which helps to prevent rot. When planting, the tubers should be placed about 4 to 6 inches (10 to 15 centimeters) deep with the eyes facing upwards. Covering the tubers with soil and providing consistent moisture will encourage the development of roots and shoots, establishing a new plant within a few weeks. Care should be taken to avoid overwatering, as Dahlias are prone to rot in overly wet conditions.