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.
One of the most difficult weeds to control in the lawn is wild violet. This native plant may look cute and dainty, especially in the spring when it produces pretty purple flowers. But in reality it is an aggressive weed with an unusual flowering quirk that results in thick mats of leaves that can choke out your lawn.elective broadleaf weed herbicides must list wild violet on the label to be effective. Bonide Chickweed Clover& Oxalis Killer is an option, or a product containing dicamba and triclopyr, but again it may take several applications to completely eradicate established plants.