| Plant owner: Abbr. | 18 |
| Plant parasite | 14 |
| Plant parenthood? | 17 |
| Plant part | 10 |
| Plant part that sounds like it was pilfered | 43 |
| Plant partitions | 16 |
| Plant parts | 11 |
| Plant parts enclosing young seeds | 33 |
| Plant parts that absorb water | 29 |
| Plant perfume | 13 |
| Plant pest | 10 |
| Plant pest genus | 16 |
| Plant pest: Var. | 16 |
| Plant pests | 11 |
| Plant pets | 10 |
| Plant pith | 10 |
| Plant place | 11 |
| Plant place, perhaps | 20 |
| Plant places | 12 |
| Plant plight | 12 |
| Plant plot | 10 |
| Plant plots | 11 |
| Plant pockets | 13 |
| Plant pod | 9 |
| Plant poisonous to fish | 23 |
| Plant pore | 10 |
| Plant pores | 11 |
| Plant pouch | 11 |
| Plant pouches | 13 |
| Plant prickle | 13 |
| Plant prized for its fiber and seeds | 36 |
| Plant problem | 13 |
| Plant problem caused by excessive fluid | 39 |
| Plant problem caused by excessive moisture | 42 |
| Plant product | 13 |
| Plant production | 16 |
| Plant production: Abbr. | 23 |
| Plant products? | 15 |
| Plant prop | 10 |
| Plant protection | 16 |
| Plant protector | 15 |
| Plant related to an iris | 24 |
| Plant related to pepper | 23 |
| Plant related to the onion | 26 |
| Plant renewing itself yearly | 28 |
| Plant reproducers | 17 |
| Plant reproduction prefix | 25 |
| Plant reproductive bodies | 25 |
| Plant reproductive body | 23 |
| Plant reproductive cell | 23 |
| Plant reproductive part | 23 |
| Plant resembling Queen Anne's lace | 38 |
| Plant resembling spinach | 24 |
| Plant resembling the yucca | 26 |
| Plant root | 10 |
| Plant runner | 12 |
| Plant runner? | 13 |
| Plant rust | 10 |
| Plant safety grp. | 17 |
| Plant said to repel bugs | 24 |
| Plant scale | 11 |
| Plant scholar | 13 |
| Plant sci. | 10 |
| Plant science: Abbr. | 20 |
| Plant secretion | 15 |
| Plant seed | 10 |
| Plant seed-to-be | 16 |
| Plant seeds | 11 |
| Plant seeds again | 17 |
| Plant sheath | 12 |
| Plant shelf, maybe | 18 |
| Plant shoot | 11 |
| Plant shoot: Var. | 17 |
| Plant shoots | 12 |
| Plant shoots: Var. | 18 |
| Plant sold in animal-shaped pots | 32 |
| Plant sometimes called a false shamrock | 39 |
| Plant sometimes called heart's-ease | 39 |
| Plant sometimes woven into mats | 31 |
| Plant source of rope | 20 |
| 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 |