Green Growmaster

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Green Growmaster, headquartered in Los Angeles, specializes in providing top-tier stone wool foundations for precise soilless cultivation in greenhouses. Our cutting-edge media technology empowers growers to manage water and fertilizer with exceptional precision, resulting in elevated crop yields and reduced resource usage and costs.

Our company was born from the dedication of a team of professionals passionate about high-quality horticultural mediums. Starting as a local supplier, we have evolved into a global leader in the horticultural industry, continuously enhancing our product and service offerings to meet the dynamic needs of our customers.
In 2022, we introduced our signature product, the sustainable rock wool block. This innovative solution surpasses traditional soil, offering superior water retention, air exchange, and root growth, leading to enhanced plant health and yield. This breakthrough laid the foundation for our hydroponic systems, allowing growers to maximize crop yield while conserving resources and space.

To better serve our customers, we have formed strategic alliances with elite distributors and manufacturers worldwide, ensuring prompt and reliable product delivery. We are dedicated to innovation and improvement in our growing mediums, contributing to a more sustainable and productive agricultural industry.At Green Growmaster, we prioritize customer partnerships, providing comprehensive, professional services, and technical support. We believe that these partnerships drive mutual growth, and we continuously strive to enhance our service and product offerings.

Our commitment extends to environmental stewardship, using eco-friendly raw materials and production processes that prevent environmental contamination, and aligning our growth with the planet's well-being.We are dedicated to advancing soilless cultivation technology, continually pushing boundaries to create a greener, more efficient future for global agriculture.


In stock

The UPuper® CB 100L 4-inch Rockwool cubes are designed for transplanting or growing large plants. They feature a standard-size pre-cut planting hole for easy transplanting.

$1,68000
In stock

The UPuper® 6-inch Rockwool grow blocks are a popular choice among hydroponic cannabis growers for the final stage of planting. These blocks can serve as containers for cannabis growth from planting to harvest. Additionally, they can be placed on a grow slab to allow the roots to continue growing.

$1,68000
In stock

UPuper®CP S40 Mini Propagation Blocks are ideal for starting larger seeds or cloning, offering easy transplantation to larger stone wool slabs once roots have extended to cover larger areas for optimal root system development. 

These blocks are commonly used in conjunction with rock wool grow cubes or slabs and are popular for rose plant cuttings or cannabis cloning. Each block is individually wrapped in white plastic, facilitating better handling and compatibility with seedling trays (flat).

$4,30400
In stock

UPuper® CP T36 rockwool plugs are specifically designed for seedling and cutting propagation, preparing them for transplantation into larger growing blocks. These plugs offer ample space for root system development and are highly practical and effective, making them the preferred choice for cloning cannabis.

$2,70400
In stock

UPuper® CP T50 rockwool plugs are meticulously engineered for seedling and cutting propagation, serving as an essential step before transplanting into larger growing blocks. Renowned for their exceptional performance and practical design, these plugs provide ample space for root development. Widely regarded as the premier choice for cannabis cloning, UPuper® CP T50 rockwool plugs consistently deliver outstanding results.

$2,70400
In stock

The UPuper® Grow Slab is the ideal solution for the final stage of growing large plants, particularly cannabis. With its ample volume, it provides the necessary space for cannabis plants to thrive. This slab promotes fast rooting and vigorous growth throughout the entire growing cycle, resulting in improved plant health, greater resilience, and ultimately, higher yields.

$2,09900