Just recently bought a decorative trunk willow tree and repotted it. However, the leaves are turning yellow and drooping. Not sure if I'm over/under watering.
Willow Tree Leaves Wilting After Repotting
Certified GKH Gardening Expert
You will need to check the soil itself.
If the top inch or so is dry, poke down into the soil. Is it damp? Is it dry? Or does it seem excessively wet?
Make sure you have used a good quality potting mix and generally a good guideline is only going up a couple of pot sizes.
Make sue the drainage hole is of adequate size for the pot.
Your plant also can be stressed by the the move.
Here are a couple of links for you.