I am Zantedeschia, a herbaceous perennial originating from the marshy regions of Southern Africa. This origin is the single most important piece of information for my care. My growth cycle is intrinsically linked to seasonal changes. I experience a period of vigorous growth and flowering, followed by a mandatory period of dormancy where I rest and replenish my energy stores (primarily in my rhizome). Attempting to keep me in active growth year-round will exhaust me and lead to my decline. Respecting this natural cycle of growth, bloom, and rest is fundamental to my long-term health.
My light requirements are specific to my growth stage. During my active growth period (typically spring and summer), I crave bright, indirect light. A spot near an east or west-facing window is ideal. Direct, harsh afternoon sun can scorch my elegant leaves, causing brown spots and fading. Conversely, too little light will result in weak, leggy growth and a complete absence of my beautiful spathes (often mistaken for flowers). As for temperature, I thrive in moderate conditions between 65-75°F (18-24°C) during growth. I am sensitive to cold and frost, which will damage my foliage and rhizome. A sudden drop in temperature can shock my system and halt growth.
My relationship with water is complex and changes with my cycle. In my active growth phase, I desire consistently moist soil. The keyword is *moist*, not waterlogged. My rhizome will quickly rot if left sitting in saturated, oxygen-deprived soil. Water me thoroughly when the top inch of soil feels dry, and always ensure excess water can drain freely. As my flowers fade and my leaves begin to yellow, signaling the onset of dormancy, you must drastically reduce watering. Eventually, stop altogether. This dry period is not neglect; it is a necessary rest for my survival. Regarding humidity, I appreciate moderate to high levels, which can be provided by a pebble tray filled with water or a nearby humidifier, especially in dry, indoor environments.
I am not a heavy feeder, but I do benefit from targeted nutrition. Feed me with a balanced, water-soluble fertilizer diluted to half-strength every 4-6 weeks during my active growth and flowering period. Fertilizing me while I am dormant or as I am entering dormancy is harmful and can burn my roots and rhizome. My roots require a well-aerated, fast-draining medium to prevent rot. A high-quality potting mix amended with perlite, coco coir, or orchid bark is perfect. This structure provides the moisture retention I need while guaranteeing excellent drainage and oxygen flow to my root zone.
This is the most misunderstood aspect of my care. In late summer or early autumn, after I have finished flowering, my leaves will naturally begin to yellow and die back. This is not a sign of disease; it is my signal that I am preparing for rest. At this point, cease watering and allow my foliage to wither completely. For indoor plants, you can remove my pot to a cool, dark place like a basement or garage where temperatures remain around 50-55°F (10-13°C) for 2-3 months. Do not water me during this time. For outdoor plants in non-frost climates, my rhizome can be left in the ground if the soil is well-drained. In colder regions, my rhizome must be dug up after the first frost, dried, and stored in a cool, dark place in peat moss or a paper bag until it is time to replant in spring.
