Not the plant you're looking for? Search over 300,000 plants
Annual Biennial

Zinnia Giant Dahlia mixed

zinnia [Giant Dahlia] mixed

A bushy, half-hardy annual, with very large semi-double flowers in bright shades of red, pink, yellow and orange; produced on long stems up to 90cm (36in) high, This makes them ideal for growing for cut flowers and for the wildlife garden, where they will be attractive to pollinators such as bees and butterflies.

Join the RHS

Become an RHS Member today and save 30% on your first year

Join now
Size
Ultimate height
0.5–1 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Orange Pink Red Yellow Green
Autumn Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H2
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Zinnia can be annuals, perennials or sub-shrubs, with branching stems bearing opposite leaves and solitary terminal flower-heads in summer

Name status

Trade

How to grow

Cultivation

Grow in well-drained, fertile, humus-rich soil in a warm, sunny position

Propagation

Propagate by seed sown in pots in spring or, in warm areas, sown in situ in late spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Bedding
  • Cut flowers
  • Flower borders and beds
  • Wall side borders
Pruning

Deadhead to prolong flowering

Pests

Generally pest-free

Diseases

May be susceptible to foot and root rot, grey moulds, fungal leaf spot and powdery mildews

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.