Why Your Calla Lilies Stay Green: Tips for Vibrant Blooms

If your calla lily spathes (the colorful wrap-around petals) remain green instead of showing their true color, check these factors:

Light: Indoors, place in a south or east window. Outdoors, provide afternoon shade where temps exceed 90°F.
Fertilizer: High nitrogen promotes green growth at the expense of bloom color. Stop fertilizing or switch to a low-nitrogen, high-phosphorus formula.
Variety: White callas often retain green at the base; colored varieties should show color early. If yours was coral when purchased, it may need more light or less nitrogen.

Adjust conditions and allow time for the plant to respond. Proper light and balanced nutrition usually restore vibrant color.

Seeding and Propagation: Growing Daylilies from Seed: Cold Stratification and Outdoor Sowing; Why Calla Lily Flowers Turn Green; Forcing Calla Lilies for a September Wedding in Indiana; Overwintering and Replanting Calla Lilies in Cold Climates: Best Practices; Managing Earwigs and Identifying Large White Calla Lilies; Caring for Potted Narcissus (Daffodils): When to Plant Outdoors; Overwintering Calla Lily Tubers in Pots; Post-Bloom Care for Outdoor Calla Lilies (Pod Stage); The Elegant Calla Lily: History, Cultivation, and Symbolism; Greenhouse Pepper Problems: Heat Stress, Yellowing, and Pest Management

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