Bush Doctor Liquid Iron

Bush Doctor Liquid Iron by FoxFarm is an organic liquid micronutrient supplement providing 5% iron to address iron deficiency in cannabis and other plants. Iron plays a crucial role in several plant processes — it's essential for the production of chlorophyll, energy transfer within the plant, and nitrogen fixation — and deficiency typically presents as interveinal yellowing on new growth despite normal pH.

With a 1-0-0 NPK base, Liquid Iron is a targeted correction tool rather than a broad-spectrum nutrient. Iron deficiency in cannabis is often caused by high pH rather than actual iron depletion from the growing medium, so it's worth checking pH (should be 6.0–7.0 in soil) before reaching for an iron supplement. When deficiency is confirmed, Liquid Iron provides a bioavailable form of iron that plants can absorb quickly.

It works across soil, coco, and hydroponic setups and can be applied both as a root drench and as a foliar spray for faster uptake. OMRI Listed and registered as CDFA Organic Input Material, making it compatible with organic growing programs. Use as needed rather than on a fixed schedule.