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Dahlia

Scientific Name: Dahlia pinnata

Description

Dahlias are a diverse genus of bushy, tuberous perennial plants known for their stunning, colorful blossoms. Flowers can be found in various shapes and sizes, ranging from small pom-pom styles to large, dinner-plate varieties. The foliage is typically dark green and helps to accentuate the vibrant colors of the flowers.

Where it Grows

  • Mexico
  • Central America
  • United States (particularly in the northern regions)
  • Europe

Planting

When

Dahlias are typically planted in the spring after the last frost date, allowing them to establish before the heat of summer.

How

  1. Choose a sunny location with well-draining soil.
  2. Dig a hole that�s about 6-8 inches deep.
  3. Place the tuber horizontally in the hole with the "eyes" facing upward.
  4. Cover with soil and water thoroughly.

Care

Watering

  • Water regularly, ensuring the soil remains moist but not waterlogged.
  • During dry spells, dahlias may require more frequent watering.

Thinning

  • Thin out the seedlings when they are about 4-6 inches tall to ensure adequate spacing (around 12-18 inches apart).

Weeding

  • Regularly check for weeds, especially during the early growth stages, and remove them to reduce competition for nutrients.

Mulching

  • Apply a layer of mulch to help retain soil moisture and suppress weed growth.

Fertilizing

  • Fertilize with a low-nitrogen fertilizer to encourage blooming rather than foliage growth.
  • Apply every 4-6 weeks during the growing season.

Pest Management

  • Watch for pests such as aphids and spider mites.
  • Use insecticidal soap or neem oil as needed to control infestations.

Harvesting

  • Dahlias can be cut for fresh arrangements when in full bloom, but it is best to cut in the morning for optimal freshness.

Common Problems

  • Powdery mildew
  • Slugs and snails
  • Botrytis blight

Nutrition

Nutritional Benefits

Dahlia tubers are edible and can be a nutritious addition to your diet, being rich in carbohydrates and a good source of vitamins.

Nutritional Composition (per 100g)

NutrientAmount
Calories73 kcal
Carbohydrates17.0 g
Protein2.0 g
Fat0.1 g
Dietary Fiber1.3 g
Vitamin C8 mg
Potassium425 mg

Varieties of Dahlia

  • Dahlia 'Bishop of Llandaff'
  • Dahlia 'Cafe au Lait'
  • Dahlia 'David Howard'
  • Dahlia 'Gallery Art Deco'
  • Dahlia 'Karma Choc'

Health Benefits

Dahlia tubers are known for being high in inulin, which can support digestive health and may help in blood sugar regulation.

Fun Facts

  • The dahlia was named after Swedish botanist Anders Dahl.
  • Dahlias are the national flower of Mexico.
  • They can grow up to 4 feet tall depending on the variety.
  • Dahlias are known to attract pollinators, including bees and butterflies.