The surname-style Alden has been on the rise in the US in recent years, while tree-inspired Rowan is a top choice. Combine this with the popularity of names ending in -er such as Carter and Parker and it makes sense why Alder is now 4 times as popular as it was a decade ago. Given to 125 boys in a recent year, it could be a modern way to honor an "Al".

Could Lilac be the next Lila or Lily or Violet? It certainly has a lot going for it--those lilting double 'l's, the fabulous fragrance it exudes, and the fact that it's a color name as well, providing a ready made nursery theme. In addition, the lilac is symbolic of first love.

An attractive and now underused nature name belonging to a tree whose wood is prized for its dark color and dense texture, which shines when polished. Ebony joined the most popular girl names list in the US in the early 1970s, peaked in 1982 at #132, and dropped back below the Top 1000 in 2006.

Ash has Southern charm plus the arboreal-nature appeal. Plus your little boy will prize Ash as the name of the hero of the Pokemon cartoons. Ash can also be a dashing short form of Asher, Ashton, or any other "Ash" name.

Oak, a symbol of solidity, strength, and longevity, is joining Cedar and Pine as a viable name, one that would work especially well in the middle.

Attractive entry into the tree name genre, joining Ash, Oak, and Juniper. Over 110 baby boys were named Cypress in the US last year, along with 70 baby girls.

Birch is a rarely used nature name that calls to mind the lovely image of the tall, strong but graceful white-barked tree.

Long in our category of so-far-out-it-will-always-be-out category, once seen as a gum-cracking 1940's telephone operator, we think it's time to reassess Myrtle, and look at is as a nature name, a plant with pink or white aromatic berries. Ruled by Venus, myrtle is a plant associated with love, peace, fertility and youth.

The version with the e at the end relates to novelist Nathaniel, so that may be the one most parents attracted to this unusual name would choose. Hawthorn nudges it toward the nature category: Hawthorn is a type of hedge.

An unusual name related to the willow family.

Strong, straight, and leafy, one of the new tree names used mostly as middles.

Branch is an attractive name with associations both with trees and with branching out into brave new worlds. Baseball's Branch (born Wesley, with Branch as his middle name) Rickey broke the color barrier by hiring Jackie Robinson for the Dodgers. Like Leaf, Branch makes a nice, not-so-obvious, addition to the tree category.

When people talk about unique baby names, Apple is often one of the first examples they mention. Apple made international headlines when Gwyneth Paltrow chose this wholesome fruit name for her daughter. Many have called it ridiculous, but we have to admit, we find it appealing enough to list as one of our top cute baby names. Rocker Bob Geldof named one of his daughters Peaches; Banana Yoshimoto is a hipster writer. Another choice in this genre is the luscious Plum, though for different reasons, neither Prune nor Cherry will fly.

Worthy sibling for Oak, Elm, Juniper, and Spruce.

Olea is an unusual botanical name that relates to both olive and oil, brought to public attention when it was chosen by actress Amy Adams as the middle name for her daughter Aviana. Olea is also an occasionally used Norwegian and Danish girl's name and is said to be an Old Hebrew word for night or moon.

A handsome, spruced-up post-Bruce tree name.

While Alivia may not have achieved the megapopularity of its mother name, it's still a widely used choice. Alivia combines the trendiness of A names with the trendiness of Olivia to create a choice that's slightly off the beaten track -- slightly being the operative word here. Is the distinction the initial A earns you worth a lifetime of explaining, "No, it's Alivia, with an A, not Olivia"? Your call, though ours would be no.

A fairly common Greek name that would fit in well here.

A name given to apple--specifically crab apple--trees. The first syllable rhymes with Cal.

Acer is the Latin botanical name for the Maple tree. Where Maple feels quite feminine, Acer is a more masculine way to reference this tree.