Tadpoles into frogs

[elleng]

Every year I get a good batch of frog spawn in my pond but the tadpoles seem to stay a long time and don't look as though they are going to turn into frogs.  Can anyone tell me how long the transformation takes, please.

Thanks elleng

[elleng]

[widgetwilk]

Don't know if this will help elleng ;)

http://allaboutfrogs.org/weird/general/cycle.html