DRUG DESCRIPTION. PROSCAR (finasteride), a synthetic 4-azasteroid compound, is a specific inhibitor of steroid Type II 5Î±-reductase, an intracellular enzyme that converts the androgen testosterone into 5Î±- dihydrotestosterone (DHT). Finasteride is 4-azaandrost-1-ene-17-carboxamide, N-(1,1-dimethylethyl)-3-oxo-,(5Î±,17Ã)-.
1 The stronger and thicker you can get your lawn, the less chance violets will stand to spread. 2  Seed your lawn. 3  You can either over-seed during a core aeration or slice-seed areas to help them fill-in with new turfgrass.4  Stay on top of things. 5  It may take a couple years to really get a handle on a big crop of violets.ollow these basic principles to win the war on violets: 1  Use the right herbicides. 2  Create an environment that is best for your lawn. 3  Fill in the thin or bare areas. 4  Stay on top of things.
Under the deceptively simple heading of common or wild violets lies a wide array of plants. Plant taxonomy lists Viola sororia (synonymous with Viola papilionacea) as one of them, and since it is the one most likely to be encountered as a lawn weed, I'll use it as an example here.o jump right to control information, scroll down to How to Get Rid of Violets below. Plant Type: Viola sororia is a broadleaf, herbaceous perennial. Wild violets are also sometimes considered herb plants, since they possess medicinal qualities (see below under Uses).