| Plant source of vitamin A | 25 |
| Plant sown by Alpert and Helen's abductor | 45 |
| Plant spray | 11 |
| Plant sprayer | 13 |
| Plant sprouts | 13 |
| Plant stalk | 11 |
| Plant stalks | 12 |
| Plant starch | 12 |
| Plant starter | 13 |
| Plant starters | 14 |
| Plant stem | 10 |
| Plant stem joint | 16 |
| Plant stem junction | 19 |
| Plant stem or stalk | 19 |
| Plant sticker | 13 |
| Plant studier | 13 |
| Plant study | 11 |
| Plant study: Abbr. | 18 |
| Plant study: Abbr; | 18 |
| Plant substance | 15 |
| Plant sucker | 12 |
| Plant suffix | 12 |
| Plant sugar | 11 |
| Plant supervisor? | 17 |
| Plant support | 13 |
| Plant swelling | 14 |
| Plant swelling problem | 22 |
| Plant swellings | 15 |
| Plant tendrils | 14 |
| Plant that can be poisonous | 27 |
| Plant that can grow on trees | 28 |
| Plant that flowers | 18 |
| Plant that gives us latex | 25 |
| Plant that grows on animals | 27 |
| Plant that heals | 16 |
| Plant that lives two years | 26 |
| Plant that makes gum | 20 |
| Plant that may fade without shade | 33 |
| Plant that may reach a height of 130 ft. | 40 |
| Plant that poisons livestock | 28 |
| Plant that reproduces by spores | 31 |
| Plant that reputedly repels insects | 35 |
| Plant that resembles an onion | 29 |
| Plant that sometimes closes | 27 |
| Plant that soothes | 18 |
| Plant that yields atropine | 26 |
| Plant that yields Japan wax | 27 |
| Plant that's a drug source [right hand] | 43 |
| Plant that's a traditional symbol of remembrance | 52 |
| Plant that's bad for dogs and cats | 38 |
| Plant that's often pluralized | 33 |
| Plant that's the source of poi | 34 |
| Plant thorns | 12 |
| Plant threat | 12 |
| Plant tissue | 12 |
| Plant tissues | 13 |
| Plant to burn | 13 |
| Plant to kiss under | 19 |
| Plant too much | 14 |
| Plant toxic to sheep and goats | 30 |
| Plant transition zone | 21 |
| Plant transplants | 17 |
| Plant treatment | 15 |
| Plant trees again | 17 |
| Plant twice | 11 |
| Plant type with a pair of seed leaves | 37 |
| Plant used as a cathartic | 25 |
| Plant used as a cleanser | 24 |
| Plant used as an antidote for snakebites | 40 |
| Plant used as an astringent | 27 |
| Plant used as an herbal remedy for headaches | 44 |
| Plant used as bird feed | 23 |
| Plant used as flavoring | 23 |
| Plant used as ground cover | 26 |
| Plant used as soap | 18 |
| Plant used by dyers | 19 |
| Plant used by Indians to cure earaches | 38 |
| Plant used by Prudhomme | 23 |
| Plant used cosmetically | 23 |
| Plant used for blue dye | 23 |
| Plant used for dye | 18 |
| Plant used for first aid | 24 |
| Plant used for flavoring | 24 |
| Plant used for fodder | 21 |
| Plant used for making pipes | 27 |
| Plant used for seasoning | 24 |
| Plant used for skin lotions | 27 |
| Plant used for sun-tan lotions | 30 |
| Plant used in ancient ointments | 31 |
| Plant used in cookery and medicine | 34 |
| Plant used in cosmetics | 23 |
| Plant used in folk medicine | 27 |
| Plant used in food coloring | 27 |
| Plant used in herbal medicine to treat headaches | 48 |
| Plant used in lotions | 21 |
| Plant used in making poi | 24 |
| Plant used in perfume | 21 |
| Plant used in remedies for dry skin | 35 |
| Plant used in salads | 20 |
| Plant used in treating burns | 28 |