Orange Dahlia
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Orange Dahlia

Dahlia × hortensis

Basic Details
Description
Floral Formula
Features
Translations
Related

Basic Details

NameOrange Dahlia
DescriptionShowy tuberous perennial with vibrant orange blooms ranging from bright tangerine to peachy-pink and bronzy-orange. Flower forms include decorative, cactus, ball, and waterlily shapes. Blooms profusely late summer through frost. Tubers must be dug and stored in cold climates. Popular cut flower and garden showstopper.
FamilyAsteraceae
GenusDahlia
TribeCoreopsideae

Floral Formula & Features

Floral FormulaEBr ⊕ ⚥ K(pappus) C(5) A(5) G(2)

Ebracteate, radially symmetrical, bisexual, calyx modified to pappus, 5 fused petals (ray or disc florets), 5 stamens fused into tube, 2 fused carpels with inferior ovary. Composite flower head

Features
  • Named for Swedish botanist Anders Dahl. National flower of Mexico. Over 42 dahlia species, thousands of cultivars. Orange varieties include 'Firepot,' 'Orange Nugget,' 'Prince of Orange'
  • Flowers 2-10 inches (5-25 cm) across depending on type. Forms: decorative, cactus, semi-cactus, ball, pompon, waterlily. Colors: bright orange, tangerine, peach, salmon, bronze-orange. Blooms July-frost
  • Herbaceous perennial grown from tubers. Hollow stems, compound leaves. Dies back after frost. Tubers must be dug in cold climates (zones below 8). Store in cool, dry place over winter
  • Grows 1-6 feet (30-180 cm) tall depending on variety. Dwarf types 1-2 feet, tall types 4-6 feet. Lifespan of tubers: many years with proper storage. Propagated from tubers or cuttings
  • Native to Mexico and Central America, particularly mountain valleys. Cultivated worldwide as ornamental. Grows best in temperate climates with warm summers, cool nights
  • Requires full sun (6-8 hours). Needs rich, well-drained soil. Regular watering (not waterlogged). Fertilize monthly during growth. Stake tall varieties. Deadhead for continuous blooms. Hardy zones 8-11, grown as annual elsewhere
  • Excellent cut flowers lasting 5-7 days. Attracts butterflies and bees. Deer resistant. Popular in borders, beds, containers. Dig tubers after first frost, store indoors over winter in cold climates
  • Symbolizes elegance, dignity, and inner strength. Popular in late summer/fall gardens when many flowers fade. Easy to grow. Requires tuber division every 2-3 years for best blooms

Names in Different Languages

Latin / ScientificDahlia × hortensis
English (Alternate)Garden Dahlia, Decorative Dahlia, Orange varieties: Firepot, Orange Nugget, Prince of Orange
Hindiडहेलिया (Dahlia), नारंगी डहेलिया (Narangi Dahlia)
Tamilடேலியா (Dahlia), ஆரஞ்சு டேலியா (Orange Dahlia)
Teluguడాలియా (Dahlia), నారింజ దాలియా (Narinja Dahlia)
Malayalamഡാലിയ (Dahlia), ഓറഞ്ച് ഡാലിയ (Orange Dahlia)
Kannadaಡೇಲಿಯಾ (Dahlia), ಕಿತ್ತಳೆ ಹೂವು (Kittale Hoovu)
Sanskritनारङ्ग दालिया पुष्पम् (Naranga Daliya Pushpam)
Bengaliকমলা ডালিয়া (Komola Daliya), ডালিয়া (Daliya)
FrenchDahlia orange
RussianОранжевая георгина (Oranzhevaya georgina), Георгин (Georgin)
SpanishDalia naranja, Dalia anaranjada
GermanOrange Dahlie, Georgine

What is Floral Formula?

A floral formula is a symbolic representation of a flower's structure using letters, numbers, and special symbols. It provides a concise way to describe the arrangement and number of floral parts.

Example Formula
% K(6) C1+2+(2) A(9) G2

This formula describes the flower's symmetry, sepals, petals, stamens, and carpels in a standardized format.

Formula Sequence

  • Bract: Br or Ebr
  • Bracteole: Brl or Ebrl
  • Symmetry: % (Radial) or ⊕ (Bilateral)
  • Sex: ♀ (Female), ♂ (Male), or ⚥ (Bisexual)
  • Calyx/Sepal: K<number> (Free or Fused)
  • Corolla/Petal: C<number> (Free or Fused)
  • Androecium: A<number> (Free or Fused)
  • Gynaecium: G<number> (Superior or Inferior Ovary)

Symbol Meanings

  • Numbers: Indicate quantity of parts
  • Parentheses (): Parts are fused together
  • Plus (+): Parts in different whorls
  • Underline: Superior ovary position
  • Overline: Inferior ovary position
  • ∞: Numerous parts (too many to count)

Understanding floral formulas helps botanists quickly identify and classify flowers based on their structural characteristics.