Guidelines for Growing Calla Zantedeschia Lilies
Calla Zantedeschia are also known as Calla Lilies; these flowers are native to South Africa and consist of several species and colors, including pink, yellow and white. There is also hybrid species called Mini Callas; these can grow anywhere from 8 to 30-inches tall.
There are basically two different ways you can grow calla zantedeschia lilies, and how you grow these flowers will depend on which type you are growing. The two main types of varieties include the evergreen species, and the hybrid colored species.
To grow the hybrid colored species of calla zantedeschia you will need a sandy and well-drained soil, as well as a location that gets plenty of sun. These flowers can be grown in pots, as well as out in your flower garden. These are definitely summer growing flowers that will need to be planted only after the soil has warmed; if you plant the bulbs in a cold and wet soil they will rot before they ever have a chance of sprouting.
With hybrid colored calla zantedeschia flowers you will have to plant the bulbs 3 to 4 inches deep, with the growing points facing upward. You will also need to add some mulch to the top of the soil. As soon as you plant the bulbs go ahead and water the area some, but not too much. You cannot water again until you begin to see the bulbs have produced some sprouts otherwise you will rot the bulbs. After the flowers have sprouted and all the leaves are open you can add a water-based fertilizer about ever two weeks.
Another point to keep in mind is that although these flowers do like the sun, the soil must be kept somewhat cool. If your daily temperature in the summer averages higher than 75F, you may want to plant in partial shade.
To grow the evergreen species of calla zantedeschia you will have to plant in very wet soil. These flowers will grow best if the soil is kept constantly wet. You will need to plant the bulbs in full sun, or you can also plant in partial shade but they should get some sun. Plant the bulbs with the pointed side up about 3 to 4 inches deep; because the roots must remain cool it is a good idea to top the soil with mulch.
The evergreen species will produce white flowers that average about 2 to 3 feet tall and 4 to 6 inches wide. After the calla zantedeschia has finished its blooming cycle, the blossoms will close up and appear green on the outside. At this point you can choose to cut the flower, or leave it to add to your garden’s foliage. These flowers also make great foliage plants when left uncut.
Most people do not have many problems with insects with the calla zantedeschia; although there can be minor problems with aphids, but they can simply be removed by hand as there should be too many.
Rot can be a problem, and probably the worst disease you will find with these flowers. Another is Erwinia, which is present in the soil but will attack the plants if rot has set in. The most common cause of rot is the roots getting too hot, or over watering. If you notice any wilted or diseased flowers it is best to remove those flowers from your garden. It will also be necessary to remove the bulbs, as they will likely be rotted.
Calla zantedeschia flowers will provide beautiful blooms for your garden if they are cared for correctly. Although most regions of the world do not provide the perfect growing environment for these flowers, they can be grown almost anyway if you take the time to research and find out what these flowers need.