- Radish
- Raffia palm
- Rampion
- Rape Kale
- Red Clover
- Red deadnettle
- Red Goosefoot
- Red Mulberry
- Red Stem Filaree
- Red valerian
- Redflower ragleaf
- Red-root amaranth
- Redwood sorrel
- Rice
- Rice paddy herb
- Rose Mallow
- Rose of Sharon
- Rosegold pussy willow
- Roselle
- Roseroot
- Rough fogfruit
- Rough Pigweed
- Round-headed leek
- Round-headed rampion
- Rukam
- Runner Bean
- Rutabaga
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