Thank you Devin,
I see the brown at the base, is it soft
where it's brown at?? IF it is
soft, then it very well may be root rot and nothing can be done sorry.
I also notice white and green under the brown so it doesn't Look like
root rot. IF the stem feels firm I would take it out of the container, purchase a good rich compost and fill at least 1/4 of the container with compost the rest with a good sandy soil for trees.
Ginkgo kept in a container needs regular watering, especially when actively growing
. Water your ginkgo tree when the soil feels dry down to your second knuckle on your index finger.
Ginkgo trees require well-draining soil to thrive. They grow in heavy clay, loam or light, sandy soil, but of all these soil types, sandy soil is best for the ginkgo tree.
When you dig a hole for your ginkgo tree, fill the bottom with a 2-inch layer of compost. Ginkgo does not need additional fertilizer to thrive.
They must receive full sun, they grow poorly in the shade.
Keep the soil moist during its first three to five years. The ginkgo tree is drought tolerant after that time.
Thanks for re posting the picture and keep us updated with the progress of your Ginkgo tree,