Blue lily flowers captivate with their rare and appealing hue, from soft sky to deep indigo. This distinct coloration creates a striking visual impact, inspiring gardeners and enthusiasts.
Understanding Blue Lilies
The term “blue lily” often causes confusion, referring to various plants, not all true lilies (Lilium). Distinguishing them is important for understanding their characteristics and care.
The blue water lily (Nymphaea caerulea), also known as the Egyptian blue water lily or sacred blue lotus, is a prominent “blue lily.” Native to East Africa, this aquatic perennial thrives in wetlands. Its striking blue-violet flowers, 4-6 inches across, rise above the water with pointed petals around a golden-yellow center.
Agapanthus, or Lily of the Nile, is another plant called a “blue lily.” Though not a true lily, it belongs to the Amaryllidaceae family. It produces clusters of blue, trumpet-shaped flowers atop tall stalks.
Other plants occasionally called blue lilies include Ipomoea species (morning glories) and native Australian plants like Stypandra glauca (nodding blue lily) and Thelionema caespitosum (tufted blue lily). Though sharing blue blooms, their classifications and growth habits vary.
Cultivating Blue Lilies
Cultivating blue lilies, especially water lilies (Nymphaea) and Agapanthus, requires specific conditions. Both types need ample sunlight to thrive, performing best in full sun (at least six hours daily).
Water lilies, as aquatic plants, need specific water and medium conditions. Plant them in still water, typically 8 to 16 inches deep, using heavy, aquatic-specific soil in submerged containers. Maintaining good water quality with a neutral to slightly acidic pH supports their growth.
Agapanthus requires well-draining, rich, loamy soil preventing root rot. Plant bulbs or rhizomes in spring or fall. They are hardy in USDA zones 7-10, though some varieties tolerate colder climates with winter protection.
Temperature and climate influence growth and flowering. Tropical blue water lilies prefer warmer water and may need protection indoors in colder climates. Agapanthus thrives in Mediterranean climates but adapts if soil and light needs are met. Ensure adequate space, as both can spread.
Caring for Blue Lilies
After establishment, ongoing care ensures blue lilies’ health and blooms. For Agapanthus, consistent watering during dry periods keeps soil moist. Aquatic blue water lilies require maintaining adequate water levels in their pond or container.
Fertilization supports growth and flowering. Blue water lilies benefit from aquatic plant fertilizers, inserted near rhizomes every few weeks during the growing season. Agapanthus can be fertilized with a balanced granular fertilizer in early spring and after flowering to encourage reblooming. Avoid over-fertilization, which can lead to excessive foliage growth at the expense of flowers.
Pruning and deadheading enhance appearance and encourage new blooms. For water lilies, remove yellowing or spent leaves and flowers to maintain water quality and redirect energy. Deadheading Agapanthus by cutting spent flower stalks prevents seed formation and promotes additional flowering.
Manage pests and diseases with regular inspection. Both plants may encounter issues. For water lilies, aphids or aquatic pests can be removed by hand or water spray. Agapanthus can be susceptible to snails or slugs, managed with organic or chemical controls. Winter care varies: tropical blue water lilies may need indoor overwintering in cooler climates, while Agapanthus in colder zones benefits from mulching to protect roots.
Symbolism and Significance
Blue lily flowers, especially the blue water lily (Nymphaea caerulea), hold cultural and historical significance. In ancient Egypt, this sacred plant was revered, intertwined with creation, rebirth, and sun beliefs. Its daily cycle of opening and closing symbolized renewal and life’s cycle.
Beyond its Egyptian roots, the blue lily is associated with spirituality and peace. Its serene appearance and tranquil blue hue evoke calmness and awakening. The flower’s connection to water, a symbol of purity and life, enhances its spiritual connotations.
The rare blue color contributes to their symbolism of beauty and mystery. As true blue flowers are less common, the blue lily represents the unique. It is a symbol of beauty, associated with depth, wisdom, and introspection.