Podocarpus – In Row Of 20 Same 5 Died Twice. Irrigation Been Checked

Question

Can you advise. All are on same drip line every 12″. No signs of fungus or disease. Irrigation line professionally checked. Can it be soil problem? Who can check soil if needed. What’s my problem? Thanks in advance.

Answer 1

Your local cooperative extension group can perform a soil test. Here is information about what the test will show and where to get one.
https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm