Stronger roots. Healthier starts. Bigger success. SEEDLINGERS ROOT BOOST is a high-performance plant starter fertilizer crafted to stimulate root development, improve soil structure, and establish a strong foundation for plant success. This energy-rich formula combines both traditional and organic-based ingredients-like compost tea, calcium, and phosphorous-to kickstart microbial life, enhance early-stage growth, and increase your plant's natural stress tolerance. Perfect for seedlings, transplants, or any new plantings, Root Boost promotes dense root systems and sets your plants up for long-term health-indoors or out.

Looking for more information on fertilizer? Check out our guide on how to read fertilizer numbers in the product documents section.