Common woods that wands are made from, and birth months/days commonly associated with them.  Many wandmakers (including Ollivander), prefer to match wand woods with this table, so it is very common.  Other woods may be used.<br/><br/>Apple Tree: 6/25 - 7/4, 12/23 - 1/1<br/>Ash: 5/25 - 6/3, 11/22 - 12/01<br/>Beach Tree: 12/22<br/>Birch: 6/24<br/>Cedar: 8/14 - 8/23, 29/9 - 2/18<br/>Chestnut: 5/15 - 5/24, 11/12-11/21<br/>Cypress: 7/26 - 8/4, 1/25 - 2/3<br/>Elm: 7/15 - 7/25, 1/12 - 1/24<br/>Fig: 6/14 - 6/23, 12/12 - 12/21<br/>Fir: 7/5 - 7/14, 1/2 - 1/11<br/>Hazelnut: 3/22 - 3/31, 9/24 - 10/3<br/>Hornbeam: 6/4 - 6/13, 12/2 - 12/11<br/>Lime: 9/3 - 9/12, 3/1 - 3/10<br/>Maple: 4/11/ - 4/20/, 10/14/ - 10/23<br/>Mountain Ash: 4/1 - 4/10, 10/4 - 10/13<br/>Oak: 3/21<br/>Olive: 9/23<br/>Pine: 8/24 - 9/2, 2/19 - 2/29<br/>Poplar: 2/4 - 2/8, 8/5 - 8/13<br/>Walnut: 4/21 - 4/30, 10/24 - 11/11<br/>Willow: 9/3 - 9/12, 3/1 - 3/10<br/>Yew: 11/3 - 11/11<br/><br/>Descriptions of the magical properties of various wand woods can be found here http://harrypotter.wikia.com/wiki/Category:Wand_woods (http://harrypotter.wikia.com/wiki/Category:Wand_woods)<br/><br/>Cores:<br/><br/>Ollivander only uses three items as cores, which he terms Supreme Cores http://harrypotter.wikia.com/wiki/Supreme_Cores (http://harrypotter.wikia.com/wiki/Supreme_Cores)<br/>Dragon heartstring<br/>Phoenix feather<br/>Unicorn tail hair<br/><br/>Other known cores (most made up by me)<br/>Veela hair (best for those with veela blood, temperamental results)<br/>Kneazle whiskers (best for independent types)<br/>Dittany stalks (useful for healing, but rather expensive)<br/>Kelpie manes (cruel people do better with it)<br/>Chimaera fur (best for temperamental people)<br/>Any winged horse (better for charms)<br/>Shrake spines (mischevious types)<br/>Salamander blood (healing, difficult to use)<br/>Nogtail tail (Curses, favors those who scheme)<br/>Niffler snout (greed and ambition, conjuration)<br/>Knarl quills (vengeful types)<br/>Glumbumble legs (Sorrowful types)<br/>Billywig stingers (carefree types)<br/>Ramora Scale (More difficult to disarm)<br/>Jobberknoll feather (better with quiet types)<br/>Grindylow finger (larger wands only, nothing narrow or stout, belligerant types)<br/>Diricrawl feathers (better with apparating)<br/>Griffin feathers (up to HangedMan)<br/><br/>Note that these don't confer bonuses and are mainly for flavor.