https://npksoil.co.uk/ 2026-09-03 weekly 1.0 An SGS09 digital soil fertility tester. The archived offer identifies it as a soil testing instrument for potted planting and gardening, with 0.1 measurement accuracy listed in the listed attributes. homepage en-GB https://npksoil.co.uk/llms.txt Machine-readable reference file for AI language models reference https://npksoil.co.uk/api/site.json Structured JSON-LD API with full product and article data api https://npksoil.co.uk/blog/plant-soil-tester-digital/ monthly 0.7 A UK guide to a digital plant soil tester: use the SGS09 as one soil clue, compare pots carefully and avoid promising plant effects the page cannot prove. article Article Plant Soil Tester Digital: What to Check Before Feeding en-GB https://npksoil.co.uk/blog/soil-nutrient-tester-for-potted-plants/ monthly 0.7 Before feeding potted plants, learn how to use the SGS09 as a soil clue, compare similar pots and avoid assuming coverage, diagnosis or plant results. article Article Soil Nutrient Tester for Potted Plants: A UK Guide en-GB https://npksoil.co.uk/blog/why-are-my-plant-leaves-turning-yellow-uk/ monthly 0.7 Yellow plant leaves can have several causes. Use this UK guide to check soil, watering, roots and light before reaching for more fertiliser. article Article Why Are My Plant Leaves Turning Yellow in the UK? en-GB