The ‘Temple of Beauty’ dahlia is a tuberous perennial known for its captivating presence and vibrant, abundant blooms, transforming any landscape.
Distinctive Characteristics
The ‘Temple of Beauty’ dahlia is known for its large, vibrant blooms, which can measure up to 6-8 inches (15-20 cm) across. These impressive flowers display a blend of colors, including shades of rose, creamy yellow, peach, apricot, orange, and pink. Some variations feature snow white petals with raspberry edges and a golden undertone. The petals gently bend back, contributing to their unique decorative form.
This dahlia variety reaches 4 to 6 feet (110-180 cm) tall, with a spread of around 5 feet (150 cm). Its robust stems support heavy blooms, making it an excellent choice for cut flower arrangements. ‘Temple of Beauty’ dahlias bloom continuously from mid-July or August until the first frost.
Planting and Site Selection
For optimal growth, ‘Temple of Beauty’ dahlias require full sun exposure, at least six to eight hours of direct sunlight daily. Well-draining, fertile, and loose sandy soil is ideal, as compacted or waterlogged conditions can lead to tuber rot. Amending the soil with compost or organic matter before planting improves drainage and provides essential nutrients.
Tubers should be planted after the last spring frost, when the soil temperature consistently reaches about 60°F (15°C). Dig a hole approximately 5-6 inches (12-15 cm) deep and place the tuber horizontally with the ‘eye’ (the growing point) facing upwards. Space individual tubers about 24-36 inches (60-90 cm) apart to allow for mature plant size and adequate air circulation.
Cultivating for Success
Consistent watering is important, but avoid overwatering immediately after planting to prevent tuber rot. Young plants do not require much water initially; wait until shoots emerge above ground before watering regularly. Established dahlias need deep watering two to three times per week, ensuring the water reaches at least 8-10 inches into the soil. During hot, dry periods, daily watering may be necessary, especially for container-grown plants.
Fertilization supports vigorous growth and abundant blooms, but dahlias are sensitive to high nitrogen levels, which can lead to excessive foliage and fewer flowers. Use a low-nitrogen fertilizer (e.g., 5-10-10 or 10-20-20) with a higher percentage of phosphorus and potassium. Begin fertilizing about 30 days after planting, once the plant has developed several sets of leaves, and continue every 3-4 weeks throughout the growing season. For container plants, fertilize every 2-3 weeks as nutrients leach out faster.
Due to their height and large blooms, ‘Temple of Beauty’ dahlias require staking or support to prevent their hollow, brittle stems from breaking. Install stakes, such as sturdy wooden or metal poles, at planting time to avoid damaging the tubers later. Position the stake about 3 inches (7-8 cm) from the center of the plant and secure the growing stems to the support every 12 inches (30 cm) as the plant grows, leaving a little slack for movement. Alternatively, a “corral” system using twine and posts can support multiple plants in a row.
Deadheading, the removal of spent flowers, encourages the plant to produce more blooms by redirecting energy from seed production. Remove flowers as soon as they begin to wilt, cutting the stem back to the nearest set of leaves or a new bud. Regular deadheading, ideally every few days during peak season, maintains the plant’s vigor and extends the flowering period until frost. Pinching the central shoot when the plant is 8-20 inches tall can also promote bushier growth and more flowers.
Monitor for pests and diseases to maintain healthy dahlia cultivation. Common pests include aphids, slugs, earwigs, and spider mites, which can cause leaf damage or disfigure blooms. Inspect plants regularly for signs of infestation, such as discolored leaves or chew marks. Powdery mildew, a fungal disease, can appear as white or grayish patches on leaves, especially in humid conditions with poor air circulation. Good garden hygiene, proper spacing, and appropriate watering practices can help prevent these issues. If problems arise, consider using targeted organic controls like insecticidal soap for pests or increasing air circulation for mildew.
Overwintering Tubers
In colder climates (USDA Zones 3-7), ‘Temple of Beauty’ dahlia tubers must be lifted from the ground and stored indoors to protect them from freezing temperatures. This ensures their survival for the following growing season. In zones 8-10, tubers can remain in the ground with proper mulching.
The ideal time to dig up tubers is after the first hard frost has blackened the foliage, but before the ground freezes solid. Cut the stalks back to a few inches above ground level. Carefully lift the tuber clump from the soil using a garden fork, taking care not to damage the delicate tubers. Gently remove as much soil as possible, and rinse any remaining dirt with a hose if necessary, ensuring not to puncture the skin.
After cleaning, allow the tubers to dry for several days in a cool, well-ventilated area away from direct sunlight, which helps to cure them and prevent rot during storage. Once dry, store the tubers in a cool, dark, and frost-free location where temperatures remain between 40-50°F (4-10°C), such as an unheated basement or root cellar. Tubers can be placed in cardboard boxes, plastic bins, or paper bags, nestled in a slightly moist medium like peat moss, vermiculite, or wood shavings to maintain some humidity and prevent shriveling. Ensure there is good air circulation around the tubers, and check them periodically throughout the winter, discarding any that show signs of rot or mold.