SUNSI is a plant-focused retail brand offering a wide selection of indoor plants, plant accessories, and nature-inspired lifestyle goods. Its collection ranges from compact tabletop plants and large floor plants to unusual and collectible varieties, including succulents, palms, ferns, cycads, and flowering plants. Some plants are presented as meaningful gifts, with descriptions highlighting their symbolism.

Alongside plants, SUNSI sells pots, handmade planters, soil and growing materials, plant stands, and accessories such as saucers, rolling bases, and automatic waterers. Its products also include grow lights and lighting kits designed to support indoor plants, as well as botanical décor, incense, candles, and bonsai-inspired gifts.

The brand also offers workshops and services related to landscape design, plant installations, and event planning. For business customers, SUNSI provides dedicated account plans with special discounts on qualifying bulk plant purchases. Its online shop features new-customer promotions and free shipping offers subject to stated conditions. SUNSI presents its approach as simple and practical, bringing together plants, care essentials, creative services, and plant-inspired products for home, gifting, and business use.