At what age do I start to talk to my daughter about sex ?

A book like Human Body (Curious Kids Guides) is as far as I would recommend going at this age.

http://www.powells.com/biblio/2-0753454726-0?&PID=24019

I think being open from the get go is a little better. If she has questions now be honest and natural about them.

I think it's a good idea to have a good long talk with her at age 9, 10 or 11, before she gets her period. You can include everything together. Puberty, sex, etc.

Let her know you are open to questions she may have and that she can come to you anytime.

WELL I concider this answer to my Q a very postive one and she will let me know when she is ready. Thanks

Well my mom told me when i got my first real good serice boyfriend so maybe about 10-?

Five years old is far to young she will not be able to understand what your trying to tell her. Usally about the time when your daughter starts to get her period you can explain it to her at the same time your explaining about why she has periods. In Middle school some schools show movies on sex education but they have to have your written cosent to allow your child to watch the movies. Kids learn quicker than we want them though other children but believe me its not 5. Why the hurry to get it over with.

AS SOON AS POSSIBLE THERE ARE MANY AGE APPROPRIATE WAYS TO INTRODUCE THE DIFFERENCES BETWEEn boys and girls , good touch vs bad touch , basically you can tell by the childs reaction to your way of speaking. My two boys by the age of 8 knew about pedophiles, rape, pregnancy, condoms , aids and more . just talk to them all the time , watch the news things will come up, read the paper together , just talk to your daughter every chance they get the better educated they are the better they are prepared to face the world.