Before cutting with the Boline, attune with the plant through visualization. Feel its energies. As you cut, say these or similar words:
"O little plant of (name)
I ask that you give of your bounty
that it may aid me in my work.
Grow stronger by my stroke,
stronger and more powerful,
O plant of (name)!"
If it is a tree, substitute the appropriate word (i.e., O tree of willow).
Gently cut only what you need, and never from very young plants or more than twenty-five percent of the growth. At the base of the plant leave an offering: a silver coin, a bright jewel, a bit of wine or milk, grain, a quartz crystal and etc. Cover the offering and it is done.
~from Maat's Book of Shadows