Plant Size A baby plant, that is 3-8 inches tall, will arrive at your home in a 3-inch-deep pot. Then, raise your new baby to maturity under your caring, green thumb. Description Alocasia plumbae "Metallica,' also known as 'Nigra,' is an upright Alocasia with dark green leaves with silver-purple undersides and purple veins. The petioles, or stems, are also purple. This elephant ear is ideal for your landscape or patio. Please note that elephant ears' attributes become more defined as they mature. The first picture is a more mature plant; the second picture shows one similar to what we ship, give or take a few inches or leaves. • Height when mature: 4 to 5 feet • Light: Full to part shade • Soil: Rich, well-drained • Water: Keep moist • Zone: 9