Greensand for Cannabis: Potassium Source or Soil Conditioner?
Greensand is a marine mineral sold as organic potassium. Rutgers soil scientists rate it as a soil conditioner first. See where it fits in cannabis beds.
Feather Meal for Cannabis: Nitrogen Content and Use
Feather meal gives cannabis a slow, steady nitrogen supply. See its typical analysis, how fast it releases, how much to mix in and when to use it.
Rock Phosphate for Cannabis: A Slow Phosphorus Source for Acidic Soil
Rock phosphate is a mined mineral that releases phosphorus over several years. See its analysis and why soil pH decides whether it pays off.
Cation Exchange Capacity: What CEC Means for Cannabis Growers
CEC tells you how well soil or a mix holds nutrients for cannabis roots. Learn what it means, how coco, peat and sand compare and how to use it.
Aloe Vera for Cannabis: Cloning and Foliar Uses
There is no cannabis evidence that aloe vera helps clones root or plants grow. Some growers still use aloe vera
Compost Tea for Cannabis: What the Evidence Says
Compost tea cannabis guide: how aerated and non-aerated teas are brewed, why disease results are inconsistent, and where compost itself does better.
Bat Guano for Cannabis: High-N vs High-P Guano
Bat guano cannabis guide: why some guano is high in nitrogen and some in phosphorus, typical analyses, and how growers use it in soil or as a tea.
Fish Emulsion for Cannabis: What It Is and How to Use It
Fish emulsion cannabis guide: what this liquid fish fertilizer is, its typical 4-1-1 to 5-2-2 analysis, how it compares with fish meal, and how to use it.
Kelp for Cannabis: Kelp Meal and Seaweed Extract
Kelp for cannabis explained: how kelp meal differs from liquid seaweed extract, its mild nutrient analysis, and what growers can expect from kelp in soil.