Q.Seedling Soursop Tree Shedding Leaves
I have two soursop seedlings which is about 8 inches tall from the soil level. When I purchased them, they have a few leaves but they started to shed the leaves and balding about a few months ago. Recently, the leaves are growing back but they start shedding again. Is it a pH issue also? How do I cure it since they are still young and I was told by the seller not to fertilize it yet because it may cause some root burns. Is it because I used a wrong media? I used Kellogg Organic Patio Plus Potting Mix for this. Thanks for all your help, master gardeners!

Certified GKH Gardening Expert
They may not be getting enough water, which will cause stress and leaf drop. They are soil tolerant but thrive in pH ranges of 5.0 to 6.5.
Mulch them very well; they have shallow root systems and water consistently. See if that helps.
https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm