Calla Lilies

Calla Lilies (Zantedeschia) are typically planted in the spring after the risk of frost has passed and the soil temperature has warmed up. The ideal time to plant Calla Lily bulbs or rhizomes is when the soil temperature reaches around 60°F (15°C). In most regions, this occurs between late April and early May, but it may vary depending on your local climate.

Calla Lilies are frost-hardy in USDA hardiness zones 8-10, so if you live in an area with mild winter within these zones, you can plant your Calla Lilies earlier and even leave them year-round in the ground.

When planting Calla bulbs, it's important to plant them at the correct depth to promote healthy growth and development. Calla bulbs should be planted approximately 1-2 inches deep with the pointy end facing upward. This depth ensures that the bulbs receive adequate moisture and nutrients from the soil while also providing protection from potential temperature fluctuations.

Additionally, make sure to space the bulbs about 12-18 inches apart to give them ample room to grow and develop. Proper spacing helps prevent overcrowding and competition for resources, leading to healthier plants and more vibrant blooms.

Calla lilies thrive in full sun to partial shade, which means they should receive at least 6 hours of sunlight per day for optimal growth and flowering. Adequate sunlight exposure is crucial for the development of strong, healthy plants and vibrant blooms.

While Calla lilies can tolerate some shade, too much shade may result in leggy growth and fewer flowers. If your garden doesn't receive enough sunlight, consider planting your Calla bulbs in containers, which can be moved to sunnier spots as needed. Regularly monitoring your garden's sunlight exposure and making adjustments when necessary will ensure your Calla lilies grow beautifully and produce stunning flowers.

Watering Calla Lily bulbs properly is essential for promoting healthy growth and vibrant blooms. Aim to keep the soil consistently moist but not waterlogged, as overly saturated soil can lead to root rot and other issues. It's important to strike a balance between providing enough water to support growth and avoiding excess moisture that could be detrimental to the plant.

During the initial planting and establishment phase, water the bulbs regularly to encourage root development. Once the plants are established, they can tolerate periods of drought, but they will perform best with consistent moisture. Adjust your watering schedule according to your local climate, soil type, and rainfall patterns to keep your Calla lilies looking their best throughout the growing season.

Calla Lily bulbs are not frost-tolerant, making them sensitive to freezing temperatures. In regions with mild winters, Calla bulbs can be left in the ground, but in areas with harsh winters, it is essential to take precautionary measures to protect them. Once the foliage has died back after the first frost, carefully dig up the bulbs and remove any excess soil.

Allow the bulbs to dry for a few days before placing them in a breathable container, such as a mesh bag or a cardboard box filled with peat moss or sawdust. Store the bulbs in a cool, dark, and dry location where temperatures remain between 50-60°F (10-15°C). By following these steps, you can ensure the health and longevity of your Calla bulbs for the next planting season.