Re: Excessive Salt
If your soil is sandy, and watering is not a problem--then that is a good solution. Salt is very soluble and will dissolve and be carried down into the subsoil. In addition it will be diluted--it is the concentration of salt that kills the plant by preventing uptake of water and other nutrients.
as for your large cycad, if there are visible areas of salt around it I would dig a shallow layer of soil and remove it. I would dig smaller plants as suggested.
Good luck.
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