| 100% | ARBOR | 5 | ____ Day (holiday for planting trees) |
| 100% | ARBOR | 5 | ___ day (holiday for planting trees) |
| 83% | ARBOR | 5 | ___ Day (holiday designated for planting trees) |
| 80% | ARBOR | 5 | ___ Day, occasion for planting trees |
| 74% | ARBOR | 5 | ___ Day (spring holiday when trees are planted) |
| 60% | ARBOR | 5 | ___ Day (holiday when many trees get planted) |
| 59% | ARBOR | 5 | ___ Day (tree-planting holiday) |
| 58% | SHOVEL | 6 | Large garden spade used for planting a tree |
| 58% | LADY | 4 | ___ Day, nickname for Billie Holiday |
| 57% | HOGMANAY | 8 | Scottish holiday for the last day of the year |
| 57% | XMAS | 4 | Holiday with a decorated tree, for short |
| 55% | PINED | 5 | Yearned for tree, on the day |
| 55% | PINED | 5 | Longed for tree on the day |
| 54% | DIGS | 4 | Prepares for a tree planting |
| 52% | CHIR | 4 | — pine, large tree of the Himalayas planted for timber |
| 52% | CHESTNUT | 8 | Legume from a Beech tree roasted for the holidays |
| 52% | TET | 3 | Holiday with a custom of planting a tree called a Cay Neu |
| 51% | NEEM | 4 | ___ tree, plant that has been used in Indian medicine for centuries |
| 51% | ARBOR | 5 | ___ Day (occasion to plant a tree) |
| 50% | ARBOR | 5 | ___ Day (tree holiday) |
| 49% | ARBOR | 5 | __ Day: tree-planting occasion |
| 49% | ARBOR | 5 | ___ Day (tree-centric holiday) |
| 49% | PEAR | 4 | Kind of tree for the partridge in "The Twelve Days of Christmas" |
| 48% | ARBOR | 5 | ___ Day (April tree-planting event) |
| 48% | CAR | 3 | World ___ Free Day, annual holiday that encourages people to opt for public transport |
| 47% | CARBONNEUTRAL | 13 | Counteracting emissions by planting trees |
| 47% | ANDRA | 5 | ___ Day, winner of a best actress Golden Globe for "The United States vs. Billie Holiday" |
| 47% | ARBORDAY | 8 | Annual time to plant trees |
| 47% | HANUKKAH | 8 | Jewish holiday observed for eight nights and days also called the Festival of Lights |
| 46% | LEAVE | 5 | Holiday for Mister Roberts |