Dahlias are known for their captivating blooms. The ‘Simone’ dahlia stands out among varieties, offering unique characteristics that make it a popular addition to garden beds and floral arrangements. Understanding its specific needs ensures a rewarding growing experience.
Characteristics of Simone Dahlia
The ‘Simone’ dahlia features striking decorative blooms, measuring around 13 centimeters (5 inches) across. These flowers display a vibrant blend of fire engine red, often transitioning into orange at the center, and can exhibit subtle purple tips.
The plants can reach a mature height of about 120 centimeters (4 feet), making them a noticeable presence in a mixed border or as a standalone specimen. Sturdy stems support these substantial flowers, making them appealing as cut flowers. Their prolific blooming habit from early summer until the first frost provides continuous blooms.
Planting Simone Dahlia
Proper planting is essential for healthy ‘Simone’ dahlia growth. Plant tubers after the last spring frost, when soil temperature reaches at least 15.5°C (60°F).
Choose a location where ‘Simone’ dahlias receive a minimum of six to eight hours of direct sunlight daily. The soil should be well-draining and rich in organic matter. Amending heavy clay soils with compost, aged manure, or peat moss improves drainage and aeration. Plant tubers 10 to 15 centimeters (4 to 6 inches) deep, laying them flat with the “eye” facing upwards. Space individual tubers 30 to 60 centimeters (1 to 2 feet) apart.
Ongoing Care for Simone Dahlia
Consistent care throughout the growing season helps ‘Simone’ dahlias flourish and produce abundant blooms. Once sprouts emerge, begin deep watering. Provide about 2.5 centimeters (1 inch) of water per week, increasing frequency during hot or dry periods. Watering at the soil level rather than overhead helps prevent fungal issues.
Dahlias are considered heavy feeders and benefit from a regular fertilization schedule. Apply a low-nitrogen fertilizer every four to six weeks, or a foliar spray every two to three weeks, to support vigorous growth and prolific flowering. Due to their height and the size of their blooms, ‘Simone’ dahlias often require staking or support to prevent stems from bending or breaking, especially in windy conditions. Insert a sturdy stake at planting time to avoid later root disturbance and provide essential support as the plant grows. Regularly deadhead spent blooms to redirect energy into producing more flowers.
Winter Care and Storage
In colder climates, ‘Simone’ dahlia tubers are not hardy and must be lifted and stored for winter. Begin after the first hard frost, once foliage has blackened. Cut stems back to 10 to 15 centimeters (4 to 6 inches) above ground, then carefully dig up the tubers.
Remove excess soil by washing the tubers. Allow them to cure for several days to two weeks in a cool, dark, humid place until dry. Store cured tubers in cardboard boxes or crates filled with a slightly dampened medium like peat moss, vermiculite, or wood shavings. The ideal storage temperature ranges between 4.5°C and 12.7°C (40°F and 55°F). Check tubers monthly, removing any showing signs of rot.
Troubleshooting Common Problems
Even with attentive care, ‘Simone’ dahlias can encounter common garden issues. Pests like aphids, spider mites, thrips, slugs, and earwigs are attracted to dahlia foliage and blooms. For aphids and mites, horticultural soaps or strong water blasts can manage them. Slugs and snails are destructive to young shoots; use physical barriers like crushed eggshells or organic repellents to deter them.
Fungal diseases, including powdery mildew and gray mold, may appear. Powdery mildew is a white, powdery coating on leaves. Improving air circulation by strategic pruning and avoiding overhead watering helps prevent its spread. Remove affected leaves and apply a horticultural fungicide. Overwatering or poorly draining soil can lead to stem rot, causing yellowing or wilting leaves. Ensure proper drainage and moderate watering for plant health.