| Clue | Source | Date |
|---|---|---|
| The practice of growing plants without soil | New York Times | 24 Oct 2026 |
| Aquiculture (11) | ||
| Technique of growing plants in water (11) | ||
| No-soil cultivation | ||
| Soil-less horticulture (11) | ||
| Method of cultivating plants also called aquiculture (11) | ||
| Plant cultivation using mineral nutrients in water | The Times Specialist Sunday | 19 Jul 2020 |
| Cultivation of plants in liquid nutrient solutions rather than in soil |