Organic Growing Supplies for Indoor & Container Gardens
Organic growing encompasses all cultivation approaches that rely on naturally derived inputs -- organic nutrient sources, biological pest and disease management, and living soil programs that cultivate the microbial ecosystem as an integral part of the growing system rather than treating the substrate as an inert delivery medium. For growers who prioritize natural inputs, soil food web biology, and organic certification compatibility, Hydrobuilder carries the full range of organic nutrients, amendments, pest control products, and growing media needed for a complete organic program from propagation through harvest.
Organic Nutrients & Soil Amendments
Organic nutrient programs use plant, animal, and mineral-derived inputs that feed the soil food web rather than delivering immediately available mineral ions directly to plant roots. Bat guano, kelp meal, fish emulsion, worm castings, and composted inputs provide the nitrogen, phosphorus, and potassium that plants need in forms that soil microorganisms process into plant-available nutrition. Browse our complete organic nutrients collection for all base nutrients and amendments, and our organic nutrient packages for complete bundled programs from Fox Farm, General Organics, and other brands.
Organic Pest Control & Disease Management
Organic pest control relies on naturally derived active ingredients -- neem oil, insecticidal soap, pyrethrin, Spinosad, Bacillus thuringiensis, and beneficial predatory insects -- rather than synthetic chemical pesticides. For OMRI-certified organic pest management options, ARBICO Organics is the leading supplier in the Hydrobuilder catalog with a comprehensive range of biological controls, beneficial insects, and OMRI-listed spray products. Combining preventive cultural practices (adequate air circulation, humidity management, crop rotation) with organic IPM products provides effective pest and disease management compatible with organic certification requirements. Fast shipping.
Organic Growing FAQ
What makes a growing program "organic"?
An organic growing program uses only naturally derived inputs -- nutrients from plant, animal, or mineral sources; pest control from naturally occurring compounds and biological agents; and growing media without synthetic chemical pre-treatments. For certified organic production, inputs must be approved under the applicable certification standard (OMRI listing in the US indicates compatibility with the NOP organic standard). For home organic growers without certification requirements, "organic" typically means avoiding synthetic mineral nutrients and synthetic chemical pesticides in favor of naturally derived alternatives.
Can I run an organic program in hydroponics?
Organic hydroponic growing is possible but requires more careful management than synthetic hydroponic programs. Most organic liquid nutrients work in hydroponic solution but encourage microbial growth in the reservoir that conventional sterile hydroponic programs avoid. Change the reservoir frequently (every 5-7 days), maintain cool reservoir temperatures, and use air stones to keep dissolved oxygen high to prevent the anaerobic conditions that cause organic solution degradation. Some certification programs do not recognize soil-less hydroponic growing as certifiably organic regardless of input choices -- check the specific certification standard requirements if certification is the goal.
What is OMRI and why does it matter for organic growing?
OMRI (Organic Materials Review Institute) is an independent nonprofit that reviews and approves products for use in certified organic production under USDA NOP standards. An OMRI-listed product has been reviewed and confirmed to be compliant with organic certification requirements. For home organic growers, OMRI listing provides assurance that a product uses only naturally derived, non-synthetic inputs without the need to research each ingredient independently. For certified commercial organic operations, using OMRI-listed inputs is typically required for maintaining organic certification.
What is the difference between organic and living soil growing?
Organic growing uses naturally derived nutrient inputs but does not necessarily cultivate an active soil microbiome as a deliberate production strategy. Living soil growing is a specific approach that intentionally builds and maintains a highly active soil food web -- adding beneficial bacteria, fungi, compost, worm castings, and mycorrhizal inoculants to create a self-sustaining ecosystem that continuously produces plant-available nutrition through biological processes. Living soil programs are organic by definition, but not all organic programs are living soil programs. Living soil requires less frequent nutrient feeding because the soil ecosystem provides ongoing nutrition from organic matter decomposition.
Are organic nutrients slower than synthetic nutrients?
Organic nutrients are generally slower-acting than synthetic mineral nutrients because most organic inputs require microbial breakdown before becoming plant-available. In a well-established living soil with active biology, this delay is minimal -- the ongoing microbial activity provides a continuous stream of mineralized nutrition. In a new or less-active soil, the initial weeks of an organic program may show slower plant response than an equivalent synthetic program until the soil biology establishes. Liquid organic formulas (fish emulsion, liquid kelp) are faster-acting than granular organic inputs because they are partially pre-processed into more immediately available forms.