In horticulture, Radiational Freeze describes a freeze caused by heat loss under clear calm conditions.. . Radiational Freeze is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Raised Bed is a term used for a planting bed elevated above surrounding grade.. . Raised Bed is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Receptive Fig refers to a fig at the stage when pollination can occur.. . Receptive Fig is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Receptive Stage is a term used for the developmental stage when fig flowers can receive pollen.. . Receptive Stage is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Reference Collection means a collection used for comparison or verification in practical plant language.. . Reference Collection is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Refractometer is a term used for a tool used to estimate soluble solids.. . Refractometer is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Refrigeration is a term used for cold storage used to slow fruit deterioration.. . Refrigeration is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Regional Performance refers to how a cultivar behaves in a particular region.. . Regional Performance is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Renewal Pruning is a term used for removing older wood to encourage replacement growth.. . Renewal Pruning is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Reproductive Growth is a term used for growth associated with flowers, fruit, or seeds.. . Reproductive Growth is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Reproductive structures are the plant parts involved in producing offspring, such as flowers, pollen, ovules, fruit, and seeds. Their form varies widely among plant groups. In figs, the reproductive structures are unusual because the tiny flowers are enclosed inside the syconium. Understanding this helps explain the ostiole, fig wasp pollination, caprifigs, and why figs do not look like ordinary open flowers.

In horticulture, Resin Flavor describes flavor notes reminiscent of resin or sap. For fig descriptions, Resin Flavor should be observed on ripe fruit when possible and paired with crop, weather, and photos, because fruit traits can change between breba and main crop or during a wet season.. . Resin Flavor is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

In horticulture, Resistance Management describes rotating tactics to reduce pest resistance. Related glossary ideas include integrated pest management.. . Resistance Management is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

Respiration means the process plants use to release energy from sugars in practical plant language.. . Respiration is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.

RH means relative humidity, the amount of water vapor in the air compared with the maximum amount the air could hold at the same temperature. It affects evaporation, transpiration, disease pressure, and drying speed. For fig propagation, high RH can prevent cuttings and young leaves from drying out, but stagnant high humidity can also encourage mold. Outdoors, humidity influences splitting, souring, leaf disease, and how quickly fruit dries after rain.

Rind Thickness means the thickness and firmness of the fig skin and outer tissue in practical plant language.. . Rind Thickness is most useful when it is tied to the exact plant part, season, cultivar, and growing conditions being described.