| FERTILISER | A chemical or natural substance put on land to supply nutrients to plants (10) |
| DRIP | Detective came up after medic got apparatus to supply nutrients |
| INHIBITOR | A substance that interferes with a chemical or biological process (9) |
| ASSET | Could be a chemical, or just an agent. (5) |
| SLEEP | Seals can ___ underwater and usually only come on land to escape predators like whales and sharks, as well as to mate, give birth, feed and moult |
| MOONLIGHT | Way of working on land to earn extra income (9) |
| LINSEEDOIL | Natural substance used as a finish for traditional wooden cricket bats (7,3) |
| HOMEOPATHY | Alternative medicine in which ailments are treated by tiny doses of natural substances (10) |
| ROYALJELLY | Natural substance served at prince's birthday (5,5) |
| ENAMEL | A substance put on hard surfaces for ornament or protective coating (6) |
| OINTMENT | Oily substance put on the skin for medical or cosmetic purposes (8) |
| CLAY | Linked to English dialect for "sticky", word for a natural substance moulded and baked to make bricks, ceramics, cloam, pottery, tiles or other figuline articles; or, earth/mud generally (4) |
| PLACEBO | Inactive substance put on body odour (7) |
| IODINE | Substance put on wounds |
| WOULD | Was prepared to say it's a natural substance (5) |
| MUG | Sticky substance put back on a drinking vessel |
| AERATE | Expose to the chemical or mechanical action of the air / oxygenate |
| EDUCT | Extracted chemical (or what Sherlock Holmes might do, without a first letter) |
| BURN | An injury caused by exposure to heat, electrical, chemical or radioactive agents (4) |
| ENRICH | Add a wealth of nutrients to? (6) |
