My wand was made from Aspen and Birch, with a core of Unicorn Hair.
Here's what I found about them elsewhere, since the information disappeared and couldn't be selected.
Aspen (cottonwood) – those with aspen wands tend to be defiant and talkative. This wand boosts power in Charms, but detracts from Healing magic.
Birch – although it has a reputation for weakness, in actuality birch is one of the finest Light wandwoods in existence. It is associated with both driving out evil spirits (and thus will produce a strong Patronus) and with healing magic.
Unicorn hair(s)
Unicorn hair is a more subtle wand, but it is quite compatible with Charms and Transfiguration. It is also hands-down the best core for healing, as it picks up some of the healing capabilities of unicorn blood. Unicorn hair has a reputation of picking gentler or more cerebral users, so it is common amongst Hufflepuffs and Ravenclaws. More laid-back Gryffindors and subtler Slytherins may find themselves with a Unicorn hair wand.