Relative humidity
Garden terms
The amount of water in the air compared to the saturation level at the same temperature; expressed as a percentage.
Glossary of terms
A reference section with categories and short explanations.
Respiration
Garden terms
The process by which the cells and tissues of a plant take up oxygen, resulting in the release of energy required for growth and development.
Root cutting
Garden terms
A section of root (rhizome) used to propagate a plant.
Rootstock
Garden terms
A plant or a part of it onto which a part of another plant is grafted.