Alphabetical Plant Listing

Dahlia 'Thomas Edison'

Thomas Edison Dahlia , Decorative Dahlias, Dinner Plate Dahlias


Dahlia 'Thomas Edison' is an eye-catching Dinner Plate Dahlia with huge and magnificent, deep purple blossoms. The fully double flowers, up to 8 in. wide (20 cm), are borne atop strong, sturdy stems. Blooming prodigiously from midsummer until frost, this dahlia grows up to 3-4 ft. tall (90-120 cm). It looks amazing when mixed with bright red or tangerine dahlias or grown among tall ornamental grasses. Great for bouquets and stunning at the back of the border.

  • Best flowering occurs in full sun, but light shade will be welcomed in hot summer areas.
  • Provide consistent moisture during the growing season and do not allow soils dry out. Plant in a sheltered location to protect your dahlias from strong winds.
  • Best in groups of 5 for best visual effect. Deadhead spent flowers to promote growth of additional flower buds.
  • If you live in a cool area (hardiness zones 3-7) and you want to save your dahlia bulbs, or more precisely, your dahlia tubers for next spring, you may dig them up before the first frost and store them over winter before replanting them next spring. Store them in boxes, covered with moistened sand in a cool, dark, frost-free place where temperature remains between 45-50 °F (7-10°C).
  • This Dahlia is a member of the Decorative Dahlias. These are double dahlias with broad, flat-tipped petals that are sometimes wavy. The flowers are normally large and the plants easily top 40 inches tall, although there are even taller varieties. They can be formal with flat petals evenly and regularly placed throughout the flowers, or informal with generally flat petals, sometimes slightly rolled at the tips, but with irregular arrangement of formation. They are all real eye-catchers!

Learn How To Plant And Care for Your Dahlias

The rich variety of their flower colors, shapes and sizes added to their extensive blooming season, have turned dahlias into a popular addition to our landscapes.Read More

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Requirements

Hardiness 8 – 11
Heat Zones 1 – 11
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs, Perennials
Plant Family Dahlias
Exposure Full Sun
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" – 24" (45cm – 60cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies
Garden Uses Beds and Borders
Garden Styles City and Courtyard, Cutting Garden, Informal and Cottage

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Great Plant Combination Ideas with Dahlias

Guides with Dahlias


While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 8 – 11
Heat Zones 1 – 11
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs, Perennials
Plant Family Dahlias
Exposure Full Sun
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" – 24" (45cm – 60cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies
Garden Uses Beds and Borders
Garden Styles City and Courtyard, Cutting Garden, Informal and Cottage

Great Plant Combination Ideas with Dahlias

Guides with Dahlias

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Dahlia 'Thomas Edison'

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