o get plants wet except at the base. All over the internet it says to never get plants wet except at the base. There are many posts that say to never put water on any part of the plants as this causes fungus and other diseases. How then is it ok to spray soapy water mixture to stop the aphids for example.
This, really, depends on the plant. In nature, rainwater will wet leaves and stems. Some are more sensitive than others.
For a sensitive plant, I would not do so. For hardy species, it should be no issue.