I have had softened water for nearly thirty years. I have two faucets
outside, one hard, one soft. The soft faucet is for the spot free car wash.
I occasionally water my plants with the soft water, and have never noticed a
problem.
I too, have all my inside plumbing connected to the softener...keeps
everything cleaner, easier.
Perry
wrote in message
oups.com...
YES! Softened water will harm your plants, to different degrees,
depending on what kind of chemical the softener uses. As for the
previous mention of potassium chloride being beneficial to plants, this
is not true. Anything you use in a softener will hurt your plants.
The chemicals used in them are all soluble salts, the same as
fertilizer.

Toad