Thomas Edison Dahlia

Variety name: Thomas A. Edison Dahlia

Hybridizer: Originated in the USA (specific hybridizer not widely documented)

Form: Informal decorative (dinnerplate size; some classifications note medium informal decorative)

Color: Deep, rich magenta-purple to dark plum-purple, often described as velvety royal purple or eggplant with a darker center; one of the truest and most reliable deep purples in dahlias, holding its color consistently year after year

Size of Bloom: 6–8 inches ( up to 10 inches on some blooms)

Height: 3–4 feet (commonly 36–48 inches)

Cut Flower: Outstanding — strong, sturdy stems with excellent vase life; prolific bloomer ideal for arrangements and bouquets; a favorite for adding dramatic, moody depth

Tuber producer: Good (robust, vigorous plants that divide well).  

Growers Notes: This iconic heirloom, introduced in 1929, remains one of the most popular and enduring dahlia varieties nearly a century later — widely regarded as the best true purple dinnerplate available. It’s reliable, heat-tolerant, and highly productive on bushy plants with dark green foliage. Blooms midsummer to frost; pinch early for bushier growth and stake the plant well. Thrives in full sun with well-drained soil. Rarely needs heavy support despite large blooms. A must-have for borders, cutting gardens, or mass plantings for bold impact.

• Listing is for 1 tuber.
• All tubers are shipped in April.
• If there is stock loss, we will refund your order. We do not send substitutions.
• Once you place an order, we are unable to change that order. If you want additional tubers, you will need to submit a new order.
• We are only able to ship within the USA
• We guarantee a viable tuber with an intact eye, unbroken neck and sound body that is true to variety ordered. Please examine your order immediately on arrival and contact me within 10 days—with clear photos—if you have a problem. Once the 10 days has elapsed the buyer accepts full responsibility for the tuber.
• We are not responsible for tubers that are being forced for cuttings.
• We are not responsible for tuber starts. Tubers must be planted.
• We are not responsible for weather events once the tuber is in your possession.