This is a confusing place, and first head to the garden and talk to a wierd lady. She wants you to head back in time to plant a tree for her, and in doing so you can also weaken the guardians which are undefeatable at this point, allowing you to eventually get the second word of power.
Head to the sun dial and go back in time.
Thanks DATD. Unfortunately though I did speak to the weird lady and she gave me the crystal, it doesn't work on either sundial. Maybe the patch would help. I don't know. I didn't really encounter anything else that I thought was buggy.
