Summer Night Dahlia Dahlia 'Nuit d'Eté' (S-c)

👤 Non-toxic to humans
🐾 Non-toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Hard-care
dahlia 'Nuit d'Eté'


The Dahlia 'Nuit d'Eté', which translates to 'Summer Night', is a strikingly beautiful cultivar known for its lush, vibrant blooms. The flowers of this dahlia variety are known for their intense, deep red or burgundy petals which can appear almost black in certain lighting conditions, giving the plant its night-inspired name. The blooms are full and rounded, sometimes described as having a pompon or cushion shape, with layers of tightly arranged petals creating a symmetrical ball of color. The petals may have slightly pointed tips, adding to the flower's intricate appearance. As a member of the Simple - Cactus (S-c) group, the 'Nuit d'Eté' carries some characteristics of cactus dahlias, where the petals are often narrow and revolute for at least two-thirds of their length. However, being a Simple type, the flower structure is not as complex as with a true cactus dahlia. The foliage of the 'Nuit d'Eté' dahlia is a rich green, providing a lush backdrop which makes the dramatic color of its blooms stand out even more. This dahlia's regal presence is often used to complement late summer and fall gardens, where it can make a strong visual impact. Its blooms are also highly sought after for floral displays and arrangements due to their unique color and form.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Summer Night Dahlia, Black Dahlia

    • Common names

      Dahlia 'Nuit d'Eté'

  • skullToxicity

    • To humans

      Dahlias are generally considered non-toxic to humans. However, as with any plant material, individual reactions can vary, and ingesting large amounts of any plant may cause stomach upset or discomfort. There are no significant toxic effects reported for the ingestion of Dahlia 'Nuit d'Eté' by humans.

    • To pets

      Dahlias are also considered non-toxic to pets. They are not listed as a poisonous plant for pets such as dogs and cats, and should not cause any serious harm if ingested. However, some pets may experience mild gastrointestinal upset, such as vomiting or diarrhea, if they consume parts of the Dahlia 'Nuit d'Eté'.

  • 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

    • Attractive blooms: Dahlia 'Nuit d'Eté' features rich, burgundy-red flowers that add a dramatic touch to any garden or bouquet.
    • Long blooming season: Dahlias, including this variety, are known for their extended blooming period from midsummer until the first frost in autumn.
    • Great cut flowers: The sturdy stems and vibrant colors of dahlias make them perfect for use in floral arrangements and bouquets.
    • Pollinator-friendly: Dahlias attract pollinators like bees and butterflies to the garden, supporting local ecosystems.
    • Variety of uses: They are versatile and can be grown in flower beds, borders, or containers for diverse gardening applications.
    • Easy to grow: With proper care, dahlias are relatively easy to cultivate, making them suitable for gardeners at all skill levels.
    • Increased property value: A well-maintained garden with colorful flowers such as dahlias can enhance the aesthetic appeal and value of a property.

  • 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

    • The tubers of dahlia can be used as a substitute for potatoes in cooking, although they have a different flavor and texture, and not all varieties are edible.
    • Dahlia petals are edible and can be used to add color and a mild spicy flavor to salads or as a garnish for dishes.
    • The hollow stems of dalhias can serve as natural water straws or pipettes for scientific educational purposes, demonstrating principles of capillary action.
    • Dried dahlia stems can be used as a material for weaving baskets or crafting lightweight structures in artistic creations.
    • The blooms can be used in dyeing fabric, offering a range of subtle hues depending on the mordant used.
    • By pressing and drying dahlia flowers, they can be used in crafting, such as for making decorative bookmarks, greetings cards, or in scrapbooking.
    • Dahlia flowers can be used to make a natural plant ink for use in art projects, providing shades of burgundy or red when used on paper or fabric.
    • The sturdy stems and foliage can provide support in the garden for weaker, climbing plants, or those that may flop without a support system.
    • The bright flowers of dahlias can be used in color therapy practices, where hues are utilized to influence mood and emotional wellbeing.
    • During the Victorian era, dahlia flowers were used in the language of flowers to express sentiments of dignity and elegance in bouquets or gifts.

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

    • Dignity: Dahlias carry the meaning of dignity due to their striking and impressive blooms that stand out in the garden.
    • Elegance: The 'Nuit d'Eté', with its deep color and sophisticated blooms, is often associated with grace and a refined beauty.
    • Creativity: The rich colors and varied patterns of dahlias are thought to inspire creative thoughts and are hence symbolic of innovation and ingenuity.
    • Change: Dahlias are symbolic of change and variety due to the diverse types of blossoms in different sizes, colors, and shapes.
    • Commitment: The dahlia’s strong stems and hearty blooms are indicative of a commitment and bond that lasts despite challenges.

Every 3-5 days
2500 - 10000 Lux
Every year
Spring-early Summer
As needed
  • water dropWater

    Summer Blooming Dahlias, like 'Nuit d'Eté', require consistent moisture and should be watered two to three times a week, providing about 1 to 2 inches of water each time. Water early in the morning at the base of the plant to allow leaves to dry out during the day, reducing the risk of disease. During the peak growing season, a weekly deep watering of around 1 to 1.5 gallons per plant is beneficial. Adjust watering based on rainfall, and reduce frequency as the weather cools to avoid rot. Always ensure proper drainage to prevent waterlogging.

  • sunLight

    Summer Blooming Dahlias thrive in full sunlight, requiring at least 6 to 8 hours of direct sun daily for best performance. Plant them in a location that receives unfiltered, bright light throughout the day. Partially shaded areas can reduce blooming and lead to leggy growth. Avoid overly shady spots which can hamper the growth and vibrancy of the 'Nuit d'Eté' blooms.

  • thermometerTemperature

    Summer Blooming Dahlias prefer warm conditions and are sensitive to frost. They can survive temperatures down to about 60°F at night but require daytime temperatures between 75°F and 85°F for optimal growth. Avoid planting in areas where temperatures dip below 50°F or rise above 90°F, as extreme temperatures can stress the plant.

  • scissorsPruning

    Pruning Summer Blooming Dahlias is essential for encouraging a bushier plant with more flowers. Pinch back the main stem when the plant is about 16 inches tall to promote branching. Remove dead or damaged stems and spent flowers regularly to encourage continuous blooming. Pruning is typically done from mid-summer until the first fall frost to keep the plant looking tidy and to maximize blooming.

  • broomCleaning

    As needed

  • bambooSoil

    The best soil mix for Dahlia 'Nuit d'Été' should be fertile, well-draining, and have a slight acidity to neutral pH, ranging from 6.5 to 7.0. A mix of loam, peat, and sand in equal parts, with a generous amount of compost or aged manure worked in, will provide the nutrients and drainage needed.

  • plantRepotting

    Dahlias, including the 'Nuit d'Été,' should generally be repotted annually. The best time to repot is in the spring when new growth begins, ensuring the tubers have space to develop and access to fresh soil. If the tubers are kept in pots over winter, refresh the potting mix when you replant them.

  • water dropsHumidity & Misting

    Dahlias like the 'Nuit d’Été' prefer moderate humidity levels. While they can adapt to various humidity conditions, aiming for a relative humidity of around 40-60% is suitable for robust growth, especially when grown outdoor.

  • pinSuitable locations

    • Indoor

      Ensure bright light, keep soil moist, and provide stakes for support.

    • Outdoor

      Plant in full sun, rich soil, space 18" apart, stake as needed.

    • Hardiness zone

      8-11 USDA

  • circleLife cycle

    The Dahlia 'Nuit d'Été', commonly known as Summer Night Dahlia, begins its life cycle as a tuber that is planted after the last frost of the season when the soil is warm. It then germinates and sprouts into a seedling before establishing a root system and growing stems and leaves in the vegetative growth stage. Once matured, the Dahlia 'Nuit d'Été' enters the flowering phase, producing its characteristic dark red, almost black flowers throughout the summer and into early fall. After blooming, the plant enters senescence, where the flowers wither and the plant prepares for dormancy. In areas with cold winters, the tubers are typically dug up and stored in a cool, dry place to overwinter. The following spring, the tubers are replanted, restarting the cycle.

  • sproutPropogation

    • Propogation time

      Spring-early Summer

    • The preferred time to propagate Dahlia 'Nuit d'Eté', commonly referred to as Summer Night Dahlia, is in spring after the last frost date when the soil has warmed up. The most popular method of propagation is by division of the tubers. Each tuber or clump of tubers should have at least one eye, which is a small bud from which new growth will emerge. Gardeners typically cut the tubers with a sharp, sterile knife, ensuring that each piece has at least one eye. The cut surfaces can be allowed to dry for a day to form a callus, which helps prevent rotting. After the callus has formed, the tubers can be planted about 6 to 8 inches deep (15 to 20 centimeters) and spaced about 18 to 24 inches apart (45 to 60 centimeters) in well-draining soil with the eyes facing upwards. This method encourages a strong and healthy growth as the new dahlia plant develops from the stored energy within the tuber.