How to Grow and Care for Purple Calla Lilies
Learn to cultivate healthy purple calla lilies. This guide covers key conditions and care techniques for achieving elegant, long-lasting blooms.
The purple calla lily, with its elegant, trumpet-shaped bloom and rich coloring, is a popular plant in gardens and floral arrangements. Its distinctive form adds a touch of sophistication wherever it is placed. Originating from South Africa, this plant has captivated gardeners and admirers worldwide.
Purple Calla Lily Meaning and Varieties
The purple calla lily is rich with symbolism, often associated with royalty, charm, and passion. Its regal color conveys a sense of admiration and magnificence, making it a meaningful gift for significant milestones. The flower’s elegant form is tied to concepts of beauty and transformation.
Several named varieties of purple calla lilies offer subtle differences in their coloration and size. The ‘Purple Sensation’ is known for its vibrant, deep purple spathes. Another popular choice is the ‘Amethyst’, which presents a softer, jewel-toned violet hue. For those seeking a darker look, the ‘Black Star’ variety features blooms so deep in color they appear almost black.
Planting and Ideal Growing Conditions
To plant calla lilies, begin with the rhizomes, which are similar to bulbs. Plant them in the spring after the danger of frost has passed and the soil has warmed. The rhizomes should be placed about four inches deep with the growing tips facing upward and spaced approximately 12 inches apart.
These plants thrive in bright, indirect sunlight. In regions with cooler summers, they can tolerate full sun, but in hotter climates, some afternoon shade is beneficial. The soil should be rich in organic matter and well-draining to prevent the rhizomes from rotting. For container planting, a high-quality, all-purpose potting mix works well.
Consistent moisture is important during the growing season. The soil should be kept evenly moist but not waterlogged; a good practice is to water whenever the top inch of soil feels dry. Purple calla lilies prefer warmer conditions, generally thriving in temperatures between 60 and 80 degrees Fahrenheit, and should be protected from frost.
Ongoing Care and Encouraging Blooms
Maintaining consistent moisture is a regular task, but you should not let the soil become soggy. For potted plants, water until it drains from the bottom holes, then discard the excess. Fertilizing helps encourage vibrant blooms. A balanced liquid fertilizer applied every two weeks during the active growing period provides the necessary nutrients. Avoid fertilizers high in nitrogen, which can lead to more foliage growth at the expense of the flowers.
After the blooming period concludes, the plant prepares for dormancy, a natural resting phase. Gradually reduce watering as the leaves start to fade. This period is important for the plant to store energy for the next season’s flowers. Once the foliage has died back, you can trim it off at the soil level.
In climates where temperatures drop below freezing (USDA zones 3-7), the rhizomes must be overwintered indoors. Carefully dig up the rhizomes after the first light frost has caused the foliage to die back. Allow them to air dry for a few days before storing them in a cool, dark place until spring planting.
Safety Considerations and Common Issues
All parts of the purple calla lily are toxic to people and pets, including cats and dogs. Ingestion can cause irritation and swelling due to the presence of calcium oxalate crystals. It is important to place these plants out of reach of children and animals to prevent accidental poisoning.
A common issue gardeners may face is the yellowing of leaves, which often indicates overwatering. Ensuring the soil is well-draining and allowing the top layer to dry out between waterings can prevent this problem. Calla lilies can also be susceptible to pests like aphids and spider mites, which can be managed with insecticidal soap.