The flowers of the dahlia 'Seniors Darkness' start out almost black, and then slowly lighten into a rich magenta. One look will tell you exactly where the name came from. This decorative dahlia has large, honeycombed flowers which are ideal for adding height and color to garden beds. It is also frequently used as a cut flower. It flowers throughout the summer, and may not survive winter in colder climates.
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Toxic to Pets
Toxicity
Annual
Lifespan
Herb
Plant Type
Deciduous
Leaf type
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Care Guide
Care Guide for Dahlia 'Seniors Darkness'
Twice per week
Water
Full sun
Sunlight
20 - 35 ℃
Ideal Temperature
Water:
Dahlia 'Seniors Darkness' requires ample water for its large leaves but is susceptible to root rot. During drought, it should be watered immediately, ensuring good drainage in rainy conditions. In early growth, it needs minimal water, increasing during peak growth, ideally before or after sunrise/sunset.
Fertilize:
Dahlia 'Seniors Darkness' requires fertile soil and a thin liquid fertilizer every 10-15 days, favoring nitrogen in early growth and phosphate-potassium later. Fertilization should cease when flower buds color, avoiding high temperatures. Symptoms of nutrient issues include light leaves for deficiency and scorched margins for excess.
Pruning:
Dahlia 'Seniors Darkness' boasts vibrant blooms, thriving with effective pruning. Employ techniques like deadheading for extended flowering and spring cuts for robust growth. Prune during the early to late spring for optimal results, enhancing health, airflow, and shape, while reducing disease risk.
Propagation:
The primary propagation methods for dahlia 'Seniors Darkness' are root division, cutting, and sowing. Root division is easy, yielding multiple seedlings, while cutting provides faster rooting and a higher survival rate when conditions are optimal. Sowing is typically used for breeding, with blooms appearing 1-2 years later.
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