Even the richest soil, if left uncultivated will produce the rankest weeds. – Leonardo da Vinci

What is a weed? I have heard it said that there are sixty definitions. For me, a weed is a plant out of place. – Donald Culross Peattie

May all your weeds be wildflowers. – Author Unknown

We can in fact only define a weed, mutatis mutandis, in terms of the well-known definition of dirt – as matter out of place. What we call a weed is in fact merely a plant growing where we do not want it. – E.J. Salisbury, The Living Garden, 1935