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Calla lilies are a popular choice for gardeners in Zone 7 due to their elegant appearance and relatively easy care. Understanding the specific needs of these plants can help you cultivate healthy, vibrant blooms year after year.
Understanding Calla Lilies and Zone 7
Zone 7, which includes parts of the southeastern and southwestern United States, has a moderate climate with mild winters and warm summers. Calla lilies thrive in this zone when provided with the right conditions, especially during their dormant winter period.
Choosing the Right Varieties
There are several varieties of calla lilies suitable for Zone 7. Some popular options include:
- ‘Black Magic’ – deep purple-black blooms
- ‘Picasso’ – striking multicolored flowers
- ‘White Wedding’ – classic white calla lily
Planting Tips for Success
Proper planting is essential for healthy growth. Follow these guidelines:
- Plant rhizomes in well-draining soil with a pH of 6.0 to 7.0.
- Choose a location with full sun to partial shade.
- Plant rhizomes 4-6 inches deep and 12-18 inches apart.
- Water thoroughly after planting and keep the soil moist but not waterlogged.
Care and Maintenance
Maintaining healthy calla lilies involves regular care practices:
- Watering: Keep soil consistently moist during the growing season.
- Fertilizing: Feed with a balanced liquid fertilizer every 4-6 weeks.
- Mulching: Apply mulch to retain moisture and suppress weeds.
- Pruning: Remove spent flowers and yellowing leaves to promote new growth.
Overwintering Calla Lilies in Zone 7
In Zone 7, winters can be cold enough to damage or kill calla lily rhizomes. To protect them:
- Dig up rhizomes after the foliage has died back in late fall.
- Clean and dry the rhizomes thoroughly.
- Store in a cool, dry place in peat moss or vermiculite.
- Replant in spring after the danger of frost has passed.
Common Pests and Diseases
While calla lilies are relatively hardy, they can be affected by pests and diseases:
- Pests: Aphids, spider mites, and mealybugs.
- Diseases: Root rot and leaf spot caused by overwatering or poor drainage.
Prevent issues by maintaining proper watering practices, ensuring good air circulation, and inspecting plants regularly.
Final Tips for Growing Healthy Calla Lilies
Growing beautiful calla lilies in Zone 7 requires attention to planting, watering, and winter protection. With the right care, you can enjoy their stunning flowers season after season.