Every time I get celery, this is what I do with the bottoms. Put them into some water and wait to see if roots will grow. Now I planted them out in Buy Tall Modern Planter Pot Eureka Farms Sarang Plant Pot and Stand Medium Desmond Lim Allison Stripe Planter with Hand Painted Blue & White Stripes for Indoor Outdoor Use Going Greens Watermelon Plant Growth Supplement, Fertilizers for Plants Home Garden 4.5 Kgs : Amazon.in: Garden & Outdoors