Across
- 4. made from plant or animal tissue that contains carbon
- 6. White volcanic material that improve aeration and water-holding capacity.
- 7. Plant roots hang in air and are misted regularly with a nutrient solution.
- 9. Mica mineral matter used to start seeds and cuttings.
- 11. High carbon to nitrogen ratio that makes nitrogen unavailable for plant use
Down
- 1. Do not contain Carbon and usually sterile.
- 2. The process of growing plants without soil.
- 3. Particles too large to use in seed germination media.
- 5. Mixture of partially decayed organic matter
- 8. Generally do not have bacteria or fungi so are considered sterile.
- 10. Material placed on soil to break the fall of raindrops (prevents erosion), prevent weeds from growing, or improve the appearance of the area