The Nerd has used this for years. Years! Ever since her first year of herbal training way back when the dinosaurs roamed. 
 
Bach flowers were fascinating. There's no way her scientific brain could reconcile how they helped. So a remedy for plants was made.
 
Seven of the of 38 remedies were combined in water (back then, Christchurch water was one of two places in the world that could be used for Bach flowers. Now, purified water is used.)
 
Poor family & friends!
Her neighbour had three standard roses, all were covered in aphids and black spot, leaves were dropping. With the neighbour's permission, of course, an experiment was concocted.
One rose was left alone,
the other sprayed once a day,
the third three times a day.
(Yes, lurking around their house was involved!)

After two weeks
one was exactly the same
the other had green leaves, no blossoms
the third had glossy green leaves, buds & blossoms.
Gobsmacking.
 
It was tried on broccoli. One was sprayed three times a day. The others were left alone. The head of the one sprayed three times a day was bigger with no bugs. The others were tiny & infested. 
 
As a result, this has been used on The Nerd's plants.
Indoor & outdoor.
Transplanted, recently planted, repotted. 
It's so simple. So much so that it has been taken for granted.
Time to share!
 
30 ml amber glass bottle with dropper.