Dahlia, Thomas Edison
Best dramatic blooms for vibrant garden displays.
The Dahlia 'Thomas Edison' produces stunning blooms up to 10 inches across, showcasing a deep, rich reddish-purple hue. This perennial variety thrives in full sun and is suitable for growing zones 3 through 10. It typically reaches a height of 2.5 to 3.5 feet with a spacing requirement of 2 feet. For gardeners in zones 3-7, it's essential to dig up the tubers after the first frost and store them indoors over winter to ensure continued blooming in subsequent seasons. Proper storage involves drying the tubers and keeping them in peat moss in a cool, dark, and frost-free location.
$13.95
Owner Satisfaction
4.5
/ 5
Category Rank
2005
/ 3259
#2005 in Plant & Flower Bulbs
Price vs Category Average
-41%
Below average
Growing Zones
310
/ to
Who it's for
- Gardeners seeking a bold, show-stopping floral display
- Home decorators and florists desiring impressive, fresh arrangements
- Enthusiasts who appreciate a continuous, vibrant floral show
Who should skip it
- Gardeners in cold climates preferring low-maintenance perennial plants
- Those with limited time or space for plant support structures
- Beginners or busy individuals seeking a truly "plant-and-forget" flower
Performance breakdown
Bloom Impact
Ten-inch blossoms deliver dramatic, high-contrast color to any summer garden.
Climate Versatility
Broad zone compatibility makes this a reliable choice for most gardeners.
Maintenance Effort
Cold-climate growers must commit to seasonal tuber lifting and storage.
Growth Habit
Sturdy height provides excellent vertical interest without overwhelming smaller garden beds.
Sun Requirements
Thrives in full sun, ensuring maximum energy for prolific summer flowering.
Planting Precision
Clear spacing requirements simplify planning for optimal airflow and plant health.
Key Specs
Growing Zones
3 to 10
Flowering Season
Summer
Light Requirements
Full Sun
Fragrant
n
Size Shipped
Top size field clumps
Height
2½-3½'
Spacing
2 ft
Genus
Dahlia
Know before you buy
This variety is known for its impressive size, producing deep reddish-purple flowers that can reach up to 10 inches in diameter.
If you live in growing zones 3 through 7, you must dig up the tubers after the first frost to protect them from freezing. In zones 8 through 10, they can typically remain in the ground year-round.
After digging them up, allow the tubers to dry thoroughly. Store them in a cool, dark, and frost-free location, ideally packed in peat moss to maintain the right moisture levels.
To ensure proper airflow and healthy growth, space your dahlia tubers at least 2 feet apart.
Yes, for the best performance and bloom production, this plant requires a location that receives full sun throughout the day.
At maturity, this plant typically reaches a height of 2.5 to 3.5 feet, making it a substantial addition to garden beds or borders.
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