Dahlia ‘Ace Summer Sunset’ is a vibrant addition to many gardens. Its striking appearance and abundant blooms make it a popular choice for adding color to outdoor spaces. This cultivar offers unique aesthetic appeal with brilliant hues and impressive size.
Understanding ‘Ace Summer Sunset’ Dahlia
The ‘Ace Summer Sunset’ dahlia is known for its large, decorative blooms, typically 6 to 9 inches across, often described as “dinnerplate” size. These flowers display vibrant orange petals with sunny yellow highlights, creating a warm, sunset-like effect. The petals are often slightly incurved, contributing to its full, double-flower form. This cultivar blooms from midsummer through fall, providing continuous color until the first frost. Its robust nature and striking coloration make it a prominent garden specimen.
Planting and Growing ‘Ace Summer Sunset’ Dahlias
Plant ‘Ace Summer Sunset’ dahlia tubers in spring after the last frost and when soil temperature reaches approximately 60°F. Choose a site with full sun exposure, meaning at least 6 to 8 hours of direct sunlight daily. In hotter climates, some afternoon shade can be beneficial. The soil should be well-draining, fertile, and rich in organic matter, with a slightly acidic to neutral pH (6.0 to 7.0). Amending the soil with compost or decomposed leaves improves aeration and fertility.
When planting, dig a hole wide enough for the tuber, placing it 3 to 6 inches deep with the eye, or sprouting end, facing upwards. If unsure which side is up, lay the tuber on its side. Space tubers 18 to 36 inches apart to allow for mature size and ample air circulation. After covering with soil, avoid immediate watering unless the soil is exceptionally dry, as too much moisture can lead to rot before growth begins. Once green sprouts emerge, begin watering.
Ongoing Care for ‘Ace Summer Sunset’ Dahlias
Consistent moisture is important for ‘Ace Summer Sunset’ dahlias once established. Deep water one to two times per week, increasing frequency during hot or dry periods. Water at the base of the plant to avoid wetting foliage, which helps prevent fungal issues. As plants grow, their substantial size, typically 3 to 4 feet tall, often necessitates staking to support heavy blooms and prevent stems from breaking. Place stakes at planting time to avoid damaging tubers later.
Fertilization is also important for ongoing care. Dahlias benefit from regular feeding, especially given their prolific flowering. Use a balanced or low-nitrogen fertilizer, such as one with an NPK ratio of 5-10-10, every 2 to 4 weeks throughout the growing season. Over-fertilizing with nitrogen can promote excessive foliage growth at the expense of flower production. Pinching back the main shoot when the plant reaches about 12 inches tall encourages branching and a bushier plant, leading to more blooms. Regularly deadhead spent flowers to promote continuous blooming.
Winterizing and Storing ‘Ace Summer Sunset’ Tubers
In regions with winter freezes (USDA Zones 7 and colder), ‘Ace Summer Sunset’ dahlia tubers must be lifted and stored indoors. This process begins after the first hard frost blackens the foliage, signaling dormancy. Carefully dig up tuber clumps, avoiding damage. After lifting, cut stems back to 4 to 6 inches.
Clean tubers by gently rinsing off soil and allow them to air dry in a cool, frost-free location with good air circulation for a few days to a week. This curing helps prevent rot during storage. Once dry, store tubers in a cool, dark, dry place, such as an unheated basement or utility room, where temperatures remain between 38°F and 50°F. Pack them in a medium like peat moss, vermiculite, or pine shavings to maintain moisture and prevent shriveling, while ensuring adequate air circulation. Periodically check tubers during winter for signs of rot or excessive drying.
Troubleshooting Common ‘Ace Summer Sunset’ Dahlia Issues
Even with proper care, ‘Ace Summer Sunset’ dahlias can encounter common issues. Pests like slugs and snails can damage young foliage. Earwigs may also feed on tender leaves and flower buds. Aphids and spider mites are other common pests, with spider mites often thriving in hot, dry conditions and causing yellowing or mottled leaves. Regularly inspecting plants helps identify these pests early.
Fungal diseases like powdery mildew, appearing as a white, powdery coating on leaves, can occur, especially in humid conditions or with poor air circulation. Stem rot can be an issue if plants are in poorly drained or overly wet soil. Ensuring good air circulation through proper spacing and avoiding overhead watering helps reduce fungal problems. For pests, physical removal, insecticidal soaps, or targeted organic controls may be effective. Maintaining overall plant health through appropriate growing conditions makes dahlias more resilient.