We have a large 15 foot tall olive tree that is planted in the ground in the lobby of our business. For the first few months it was doing great but recently it's been losing leaves. The first couple inches of the soil are dry but our meter is reading 10/10 or very wet about 8 inches down. We have 2 grow lights that run for 5 hours at night that are about 10 feet from the tree. There is a large 10'X10' skylight directly about the tree. The leaves have been falling off and drying out but there is still new growth on the top and a small amount on one side. Thoughts?
Indoor Olive Tree
Certified GKH Gardening Expert
It sounds like the soil has poor drainage and this would correlate with the stress that the Olive Tree seems to be presenting.
How is excess moisture draining from this planting area?
Root Rot is a real possibility unless the tree has adequate drainage.