Thailand Giant - Giant Elephant Ear Its glaucous green leaves can measure a whopping 5' long x 4' wide each. ... From a young age, this plant produces pleasantly perfumed, white, lily-like flowers, though it really is grown more for its gigantic leaves. Eay to grow Sun or part shade. Grown in a 4" pot. Zones: 7 -10. We grow only Tissue culture plants so guaranteed disease-free 8"+ high shipped. Two free fertilizer spikes and growing instructions included with plants.