Alphabetical Plant Listing

Dahlia coccinea (Scarlet Dahlia)

Scarlet Dahlia


A very popular Dahlia species, Dahlia coccinea provides a brilliant floral display with profuse vivid red, single velvety flowers in late summer. They contrast beautifully against the finely dissected, dark green foliage. The single flowers, up to 4 in. wide (10 cm) blend nicely with other plants and add welcomed color and form to the late summer and fall borders. Very attractive to butterflies and bees, this dahlia is a very pretty and versatile plant. While it is quite tall, it enjoys a terrific delicate habit of growing through other plants and it does not need staking.

  • Blooming massively from August until Frost, this dahlia grows up to 2-5 ft. tall (60-150 cm) and is an excellent choice to create a lovely garden display or for showing.
  • A great pick for borders, containers or as cut flowers thanks to its superb vase life. Did you know that the more you cut Dahlia flowers, the more flowers you get? This makes Dahlias twice as nice: pretty in a vase, pretty in the garden. A great big flower in a vase or floating in a shallow bowl makes the perfect eye-catcher.
  • 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).

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

Not sure which Dahlias to pick?
Compare All Dahlias

Buy Dahlia coccinea (Scarlet Dahlia)

Requirements

Hardiness 9 – 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 (Late)
Fall
Height 2' – 5' (60cm – 150cm)
Spread 1' (30cm)
Spacing 16" (40cm)
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, Patio and Containers
Garden Styles City and Courtyard, Cutting Garden, Informal and Cottage

Buy Plants

Great Plant Combination Ideas with Dahlias

Guides with Dahlias


John Martin, Marcus Harpur

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 9 – 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 (Late)
Fall
Height 2' – 5' (60cm – 150cm)
Spread 1' (30cm)
Spacing 16" (40cm)
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, Patio and Containers
Garden Styles City and Courtyard, Cutting Garden, Informal and Cottage

Great Plant Combination Ideas with Dahlias

Guides with Dahlias

Plant Calculator

How many Dahlia coccinea (Scarlet Dahlia) do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Dahlia coccinea (Scarlet Dahlia)

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.