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2. Controlled-release fertiliser - Wikipedia

   en.wikipedia.org/wiki/Controlled-release_fertiliser

   Controlled release fertilizers are traditional fertilizers encapsulated in a shell that degrades at a specified rate. Sulfur is a typical encapsulation material. Other coated products use thermoplastics (and sometimes ethylene-vinyl acetate and surfactants, etc.) to produce diffusion-controlled release of urea or other fertilizers. "Reactive ...

3. Fertilizer - Wikipedia

   en.wikipedia.org/wiki/Fertilizer

   Controlled-release fertilizer is also known as controlled-availability fertilizer, delayed-release fertilizer, metered-release fertilizer, or slow-acting fertilizer. Usually CRF refers to nitrogen-based fertilizers. Slow- and controlled-release involve only 0.15% (562,000 tons) of the fertilizer market (1995).

4. How to Care for Hellebores So They Last Decades in Your Garden

   www.aol.com/lifestyle/care-hellebores-last...

   Fertilize with a slow-release granular type in the spring. Natural Purpose Granular 4-Lb Organic Food. $8.97 at amazon.com. Common Problems with Hellebores. Jacky Parker Photography - Getty Images.

5. Bone meal - Wikipedia

   en.wikipedia.org/wiki/Bone_meal

   Bone meal provides phosphorus and calcium to plants, along with a largely inconsequential amount of nitrogen. [4] The N-P-K rating of bone meal is typically 3–15–0 [5] along with a calcium content of around 12% (18% CaO equiv.), [6] although it can vary quite a bit depending on the source from 1–13–0 to 3–22–0.

6. Should You Fertilize Houseplants in Winter? Here's When to ...

   www.aol.com/fertilize-houseplants-winter-heres...

   Unlike outdoor plants, indoor plants are entirely dependent on us for their care and they need to be fertilized and watered regularly during the growing season. But when winter arrives and the ...

7. Coated urea - Wikipedia

   en.wikipedia.org/wiki/Coated_urea

   Sulfur-coated urea, or SCU, fertilizers release nitrogen via water penetration through cracks and micropores in the coating. Once water penetrates through the coating, nitrogen release is rapid. The particles of fertilizer may in turn be sealed with wax to slow release further still, making microbial degradation necessary to permit water ...