Soil Amendment vs Fertilizer: What Each One Does in a Cannabis Garden
A soil amendment improves structure while a fertilizer adds nutrients. See how they differ, where they overlap and how cannabis growers use both.
Top Dressing Cannabis With Amendments: A Simple Midseason Feed
Top dressing cannabis means spreading dry amendments on the soil around a growing plant. See what to use, where it goes and when to repeat it.
Cottonseed Meal for Cannabis: Slow Nitrogen With a Mild Acid Effect
Cottonseed meal is a slow organic nitrogen feed that tends to lower soil pH. See its analysis, how long it lasts and when it suits cannabis beds.
Soybean Meal for Cannabis: A Plant Based Nitrogen Feed
Soybean meal is a plant based fertilizer with about 7 percent nitrogen. Learn how fast it feeds cannabis and why it should go in before planting.
Sulfate of Potash for Cannabis: A Low Salt Potassium Source
Sulfate of potash supplies potassium with less salt than muriate of potash. Learn its analysis, when cannabis needs it and how much to apply.
Langbeinite for Cannabis: Potassium and Magnesium in One
Langbeinite is a mined mineral that supplies potassium, magnesium and sulfate without shifting pH. See its analysis and how to use it on cannabis.
Crab Meal for Cannabis: Nitrogen, Calcium and Lime
Crab meal is ground crab shell that adds nitrogen, phosphate and lime. See its typical analysis, how fast it works and how to use it in cannabis soil.
Oyster Shell Flour for Cannabis: Calcium and Soil pH
Oyster shell flour adds calcium and slowly raises soil pH. Learn how fine it must be, when cannabis beds need it and how much to mix into the soil.
Insect Frass for Cannabis: What Growers Should Know
Insect frass is the residue left from raising black soldier flies. See how it works as a cannabis soil amendment, what it adds and where it falls short.