How To Treat Potted Sago Palms With Magnesium Deficiency

Question

I have two potted Sago Palms (6″ pots) whose older leaves are yellow and yellowing. I cut off the yellow leaves on one Sago Palm and the other palm’s older leaves are yellowing now. The soil is very alkaline . From your description of the difference between magnesium deficiency and manganese deficiency I believe we have magnesium deficiency. What form of magnesium do I need and how do I administer it to my Sago Palms? Thank you so much for your help, Linda H. Cooper

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Answer 1

These articles should help:

https://www.gardeningknowhow.com/ornamental/trees/sago-palm/fertilizing-sago-palms.htm
https://hgic.clemson.edu/factsheet/palm-diseases-nutritional-problems/