Dahlia Thomas A. Edison

Description

The Dahlia Thomas A. Edison is a stunning hybrid dahlia that was bred by A.D. Livett in 1929. This dahlia is named after the famous inventor, Thomas Edison, and is known for its large, vibrant blooms that can measure up to 8 inches in diameter. The petals of the Thomas A. Edison dahlia are a deep burgundy color with hints of red and purple, which makes it a popular choice for cut flower arrangements.

Taxonomic Information

Appearance

The Dahlia Thomas A. Edison has large, double blooms that can measure up to 8 inches in diameter. The petals are a deep burgundy color with hints of red and purple, and have a velvety texture. The foliage of this dahlia is a dark green color and has a slightly serrated edge. The Thomas A. Edison dahlia can grow up to 4 feet tall and 2 feet wide, making it a great choice for a focal point in the garden.

Care Guide

Water: The Dahlia Thomas A. Edison requires regular watering, especially during hot, dry weather. Water deeply once a week, or more frequently if the soil is dry to the touch.

Fertilization: Feed the Thomas A. Edison dahlia every 2-3 weeks during the growing season with a balanced fertilizer. This will help promote healthy growth and abundant blooms.

Soil: The Dahlia Thomas A. Edison prefers well-draining soil that is rich in organic matter. Amend the soil with compost or aged manure before planting.

Sunlight: The Thomas A. Edison dahlia prefers full sun, but can tolerate partial shade.

Hardiness Zones: The Dahlia Thomas A. Edison is hardy in USDA zones 8-11. In colder zones, the tubers should be dug up and stored indoors during the winter months.

Common Pests & Diseases

The Dahlia Thomas A. Edison can be susceptible to a number of pests and diseases, including:

• Spider mites: These tiny pests can cause yellowing of the leaves and a fine webbing on the plant. Use an insecticidal soap to control spider mites.
• Aphids: These small, soft-bodied insects can suck the sap from the plant and cause stunted growth. Use a neem oil spray to control aphids.
• Powdery mildew: This fungal disease can cause a white, powdery coating on the leaves. Use a fungicide to control powdery mildew.

Habitat

The Dahlia Thomas A. Edison is native to Mexico and Central America, but is widely cultivated as an ornamental plant in gardens around the world. This dahlia thrives in warm, sunny locations with well-draining soil.

Question and Answer

Q: How do I plant Dahlia Thomas A. Edison tubers?

A: Plant Dahlia Thomas A. Edison tubers in the spring, after the danger of frost has passed. Dig a hole that is twice as wide as the tuber and plant it with the “eyes” facing up. Cover the tuber with soil and water well.

Q: Can I grow Dahlia Thomas A. Edison in a container?

A: Yes, you can grow Dahlia Thomas A. Edison in a container. Choose a container that is at least 12 inches deep and wide, and fill it with well-draining potting soil. Water regularly and fertilize every 2-3 weeks.

Q: When should I deadhead my Dahlia Thomas A. Edison?

A: Deadhead your Dahlia Thomas A. Edison regularly to promote continuous blooming. Remove spent blooms by cutting the stem just above the first set of healthy leaves.

Q: How do I overwinter Dahlia Thomas A. Edison tubers?

A: In colder zones, dig up the Dahlia Thomas A. Edison tubers after the first frost and allow them to dry in a cool, dry location for a few days. Brush off any excess soil and store the tubers in a cool, dry location (between 40-50°F) until the spring.

Related Plants

• Dahlia ‘Bishop of Llandaff’
• Dahlia ‘Café au Lait’
• Dahlia ‘Kelvin Floodlight’
• Dahlia ‘Moonfire’
• Dahlia ‘Purple Gem’

References

• “Dahlia ‘Thomas A. Edison’.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b538.
• “Dahlia Thomas A. Edison.” White Flower Farm, www.whiteflowerfarm.com/dahlia-thomas-a-edison.
• “Growing Dahlias.” National Garden Bureau, www.ngb.org/year-of/2022-year-of-the-dahlia/growing-dahlias/.