Dahlia Dahlia 'Fusion' (D)

Water

Dahlias should be watered deeply, meaning you need to let the water reach the roots, which usually requires a few gallons per plant. It's best to water them in the early morning or late afternoon to reduce evaporation. During the active growing season, water about two to three times a week, but adjust for rainfall and temperature, as they may need more frequent watering during particularly hot or dry spells. Avoid overhead watering to prevent leaf mildews and don't let the soil become waterlogged. Typically, one to two gallons per week should suffice, depending on weather conditions.

Light

Dahlias thrive in a location where they can receive full sunlight, which means at least 6 to 8 hours of direct sunlight a day. They perform best when they have a clear, southern or western exposure, where sunlight is most intense. Avoid planting them in areas that are shaded for a significant portion of the day, as too little light can result in poor flowering.

Temperature

Dahlias prefer temperate conditions and can typically handle temperatures ranging from about 60°F to 90°F. They are not frost-hardy and will be damaged or killed by temperatures below 32°F. The ideal temperature for robust growth and flowering is between 70°F and 85°F. Dahlias should be planted after the danger of frost has passed in the spring and will continue to flourish until the first frost in the fall.

Pruning

Dahlias benefit from pruning, or deadheading, to encourage more blooms and maintain a neat appearance. Remove spent flowers and any broken or damaged stems throughout the growing season. In the fall, after the first frost, cut the stems down to about 4 inches above the ground as they begin to die back. This is also a good time to lift and store the tubers in colder climates.

Cleaning

As needed

Soil

Dahlias thrive in a well-draining, fertile soil rich with organic matter. A mix of two parts garden soil, one part peat moss, and one part perlite or coarse sand forms an ideal base for Dahlias. They require a slightly acidic to neutral soil pH, ranging from 6.5 to 7.0, for optimum growth. Regular amendment with compost can help maintain soil fertility for the Dahlia 'Fusion'.

Repotting

Dahlias, including the Dahlia 'Fusion', typically are not repotted as they are grown from tubers that are planted annually. After the growing season, the tubers can be dug up, stored for the winter, and replanted the following spring. If grown in containers, they should be repotted when they outgrow their current pot, usually every season when new tubers are planted.

Humidity & Misting

Dahlias prefer moderate humidity levels. The best humidity level for a Dahlia 'Fusion' aligns with typical outdoor conditions as they do not thrive in overly humid environments. While specific humidity percentages are not usually provided for Dahlia care, it is important to ensure good air circulation around the plants to prevent issues with fungal diseases.

Suitable locations

• Indoor

  Ensure bright light, regular watering, and good air flow.

• Outdoor

  Plant in sunny spot with good drainage after last frost.

• Hardiness zone

  8-11 USDA

Life cycle

Dahlia 'Fusion' begins its life cycle when a tuber is planted in the ground after the last frost, sprouting stems and leaves as it grows. The plant enters a vegetative stage where it develops a strong root system and a sturdy stem, along with lush foliage. Following this, the Dahlia 'Fusion' enters the bud formation phase where flower buds start to develop, signaling the beginning of the reproductive stage. The flowers bloom, displaying their vibrant colors and intricate patterns, attracting pollinators for the purpose of sexual reproduction. After pollination, seeds may form, which can be dispersed to give rise to new plants, though cultivation typically relies on dividing tubers rather than seeding. As temperatures drop with the approach of winter, the Dahlia 'Fusion' plant enters dormancy; the aerial parts die back, and the tubers can be lifted and stored until the next growing season.

Propogation

• Propogation time

  Spring-Early Summer

• Propogation: The most favored method of propagating Dahlia 'Fusion' is through its tubers, typically carried out in spring when the risk of frost has passed. To propagate by division, one should dig up the tuber clumps of an established dahlia after the foliage has died back, usually after the first light frost. The tuber clumps can then be cut into smaller sections ensuring that each piece has at least one "eye," or growth point, from which new shoots can emerge. Divisions should then be planted directly into the garden or into pots, positioning the tuber so the eye is just above the soil surface. It's important to water the newly planted tubers sparingly until new growth appears, to prevent rot.