Thomas Edison Dahlia (Dahlia pinnata ‘Thomas Edison’)

Thomas Edison Dahlia

The eye-catching and dramatic purple of Thomas Edison Dahlia (Dahlia pinnata ‘Thomas Edison’) rises tall all summer and may even rebloom until fall! Giant, double blooms are deep purple and fade slightly at the edges, giving each bloom an ombre effect in the sun. They’ll glow as focal points as cut flowers for fabulous vase arrangements!

Featuring tidy and low-maintenance, upright growth, Thomas Edison calls butterflies, Hummingbirds and flocks of admirers to your garden! The impressive blooms on tall, sturdy stems bring the blooms closer for you to admire, with lush, green foliage that holds its color all summer as well! Deeply divided leaves are an amazing backdrop to these bold blooms!

Healthy tubers are great in a wide range of growing zones, and are perennial in zones 8 and up! But cooler zones need not miss out, Thomas Edison Dahlia keeps well as a houseplant and will winter over indoors easily! Colder zones can dig the tubers and store them until spring.

Planting and Application:

So versatile, Thomas Edison will lend vivid color to your perennial gardens and borders, cutting gardens, planters and containers alike! They make a huge impression on your perennial and cottage borders where they don’t take up much room but are sure to create quite the spectacle anywhere you choose to use them!

Thomas Edison acts like a beacon in container gardens and planters! Drop these magnificent focal points to your Creeping Jenny spillers and other bright yellow blooming fillers! Mix among your Rose gardens for golden accents and as the next layer to your bulb gardens to shine after they’ve bloomed and receded in the summer heat!

  • Huge (Dinner Plate Dahlia) Purple Blooms
  • Dramatic Ombre Effect
  • Easy Care & Low Maintenance
  • Freely Reblooming
  • Great Butterfly & Cut Flower Specimens
  • Reliable Summer Bulbs, Containers & Planters, Beds & Borders

Tips for Care:

Thomas Edison enjoys moist, organically rich soils in full sun and sometimes partial shade in hotter growing zones of USDA zones 9-10, Dahlia tubers can be lifted (dug up) in fall after frost and stored in growing zones 1-11. Preferring a wide range of soil types, clay, and acidic conditions, as long as they’re planted in well-drained locations. To ensure even moisture, place mulch around the base of the plant. Adding mulch can add to the overall physical appearance of your landscaping to make it look clean and put together.

The foliage will fade in the fall and wilt with colder nights. In very cold climates, to save your tubers for the next year, dig up the plants after the first frost. Let them dry out, and then place in paper bags or boxes in a cool place. Throughout the winter, sprinkle a little water if the tubers are drying up. If you live in a warmer frost-free climate, just trim out stems to keep your plants looking their best; fresh growth will appear in the spring.

  • Full Sun to Partial Shade
  • Well-Drained Organic Soil
  • Moderate Consistent Moisture
  • Lift Tubers in Fall After Frost
  • Appreciates Monthly Fertilizer

Start your Dahlia collection or feed your existing Dahlia obsession with the gorgeous Thomas Edison Dahlia!

Thomas Edison Dahlia (Dahlia pinnata ‘Thomas Edison’) Details

Common name Thomas Edison Dahlia
Botanical name Dahlia pinnata 'Thomas Edison'
Hardiness zone 1-11 Annually (perennial in zones 9-11)
Growth rate Fast
Height 36 - 48 inches
Width 12 - 24 inches
Sunlight Full Sun, Partial Shade
Moisture Medium
Soil condition Well Drained
Pollinator-friendly Yes
Pruning time After Foliage Yellows
Flower color Purple