The ‘Lake Ontario’ dahlia is a popular choice among gardeners, celebrated for its striking beauty and captivating presence. Cultivating this stunning flower introduces vibrant hues and intricate forms into outdoor spaces, transforming gardens into picturesque displays.
Distinctive Features of Lake Ontario Dahlia
The ‘Lake Ontario’ dahlia is recognized for its fully double, decorative-type blooms, measuring 4 to 6 inches (10-15 cm) across. Its signature color palette features vibrant golden yellow petals, often with ruby-red tips or brush strokes, creating a fiery appearance. Some variations may also present an orange and yellow gradient.
This dahlia variety reaches 36 to 48 inches (90-120 cm) tall. Robust stems support the large flowers, making them suitable for garden beds or cut arrangements. Its size, vivid coloration, and intricate petal arrangement make the ‘Lake Ontario’ dahlia a standout specimen.
Cultivating Lake Ontario Dahlias
Site Selection and Soil
Cultivating ‘Lake Ontario’ dahlias requires careful site selection. These plants thrive in full sun, requiring at least six to eight hours of direct sunlight daily for abundant blooms. The soil should be well-draining and fertile, as they are sensitive to waterlogging. They perform best in soil amended with compost to improve drainage and nutrient content.
Planting and Spacing
Dahlia tubers should be planted in spring, after the last frost, when soil temperature reaches at least 50°F (10°C). Dig a hole 2 to 5 inches (5-12.7 cm) deep, placing the tuber horizontally with the “eye” facing upwards. Space tubers 24 to 30 inches (60-75 cm) apart for air circulation and plant development.
Watering and Fertilizing
Maintain consistent moisture throughout the growing season, but avoid overwatering to prevent tuber rot. Water regularly, especially during dry spells, keeping the soil moist but not saturated. Begin fertilizing every 7 to 10 days during early growth with a nitrogen-rich liquid fertilizer. As buds start to appear, switch to a fertilizer higher in phosphate and potassium to support flower development.
Support and Deadheading
Due to their height and large blooms, ‘Lake Ontario’ dahlias benefit from structural support to prevent stems from bending or breaking. Staking plants at planting provides stability. Regular deadheading (removing spent flowers) encourages more blooms throughout the season by redirecting energy from seed production.
Winterizing and Tuber Storage
In colder climates, ‘Lake Ontario’ dahlia tubers are not winter hardy and must be dug up before the first hard frost. After the foliage has been blackened by frost, carefully lift them from the ground. Allow them to dry for a few days in a sheltered location, away from direct sunlight.
Once dried, store them in a cool, dark, frost-free environment, ideally between 45-50°F (7-10°C). Place them in boxes or breathable containers, covered with moistened sand, peat moss, or wood shavings to maintain humidity and prevent desiccation. Proper storage ensures viability for replanting the following spring.
Addressing Common Dahlia Issues
Cultivating ‘Lake Ontario’ dahlias may present challenges, including common pests and diseases. Pests like slugs, earwigs, and aphids can affect foliage and blooms. Regular monitoring allows for early detection and management.
Diseases like powdery mildew (a white, powdery growth on leaves) can occur in humid conditions. Root rot also concerns, often from excessive moisture and poorly draining soil. Ensuring good air circulation and proper watering can prevent these issues, promoting healthier growth.