The elegant and graceful calla lily, native to South Africa, is a stunning addition to any outdoor garden. These striking plants, with their large, white trumpet-shaped flowers, are acommon sight in many a gardener's arsenal, adding a touch of sophistication and drama to landscapes. Let's delve into the world of calla lilies outdoors, exploring their growth, care, and uses in landscaping.
Calla lilies, scientifically known as Zantedeschia, belong to the Araceae family and are often mistaken for true lilies. However, they are not lilies at all but rather members of the arum family. Despite their misnomer, these plants are beloved for their beauty and ease of care.
Calla Lily Varieties and Colors
Calla lilies come in a wide variety of colors, sizes, and bloom times. The most common is the white calla lily, with its pure, snow-white petals contrasting beautifully against deep green leaves. However, breeders have fostered an array of colors, including pink, purple, orange, and even black.
Some popular varieties include 'Easy' series calla lilies, known for their vibrant colors and ease of growth, and 'Elegance' series, recognized for their large flower size and exceptional breeding habits.
Color Considerations in Landscaping
When planning your outdoor space, consider the color palette of your calla lilies. White calla lilies can brighten up shady areas, while vibrant colors can add a pop to borders or containers. Strategically placing different colored calla lilies can create eye-catching contrasts and harmonious color schemes.
For example, pink calla lilies pair well with purple salvia, while orange calla lilies can offset blue ageratum, creating a stunning complementary color contrast.
Bloom Times and Seasonal Interest
Calla lilies typically bloom in late spring to early fall, depending on the variety and climate. Some early-blooming varieties, like 'Red Pearl', start as early as April, while late-season bloomers, like 'Saffron Croix', extend the bloom time until November.
To maintain seasonal interest, consider planting a mix of early, mid, and late-season bloomers. You can also interplant calla lilies with other perennials that fill in during different seasons, like daffodils or asters, to create a continuous display of color.
Growing Calla Lilies Outdoors
Calla lilies are robust and relatively carefree, making them excellent choices for beginners and experienced gardeners alike. They thrive in full sun to partial shade, with at least half a day of sunlight recommended for optimal bloom.
These plants prefer well-draining soil with a pH between 6.0–7.0. They can tolerate a range of soil types, from sandy to clay, as long as they are not waterlogged. Mulching around the base of calla lily plants helps retain soil moisture, suppress weeds, and maintain even soil temperatures.
Watering and Fertilizing
Calla lilies require consistent moisture, especially during active growth and bloom. Aim for 1 inch of water per week, adjusting for rainfall and soil type. Too much or too little water can cause issues, so maintaining a balance is key.
Fertilize calla lilies in early spring, just as new growth emerges. A balanced, slow-release fertilizer or a specialized bulb fertilizer works well. Foliar feeding with a liquid kelp or fish emulsion can also provide a nutrient boost and encourage healthy growth.
Winter Care and Overwintering
In colder climates, calla lily bulbs are not winter hardy and need protection from freezing temperatures. In zones 7 and below, dig up bulbs after the first frost, store them in a cool, dry place (around 40-50°F or 4-10°C), and replant them in late spring.
In warmer climates, calla lilies are winter hardy and can be left in the ground year-round. Mulching around the base of the plants in winter provides additional protection and helps maintain soil temperature and moisture.
Incorporating calla lilies into your outdoor space can transform your garden into a captivating, vibrant oasis. Whether you're a seasoned gardener or just starting, these elegant plants are a rewarding addition to any landscape. So go ahead, experiment with colors, embrace the drama, and enjoy the natural beauty of calla lilies in your outdoor space.