| Answer | Crossword Clue |
|---|---|
| CICADA | Insect that may live for 17 years |
| CICADAS | Insects that may emerge after 17 years |
| ENGLISHOAK | Tree that may live over 1000 years |
| CICADA | One might live underground for 17 years |
| everlastings | EVERLASTING, a flower that may be kept for years without much change of appearance |
| everlasting | lasting forever / a flower that may be kept for years without much change of appearance |
