Keep compost or fertilizer … Getting a soil test is the best way to determine accurately the amount of fertilizer to apply to your grapes. Grapes usually require very little nitrogen fertilizer. Ideally this would be done before … Fertilizing Grape Vines. That said, whenever feeding plants that produce fruit that I intend on eating, I go the … I also have discussed … Fertilizing is an excellent way to replenish the natural nutrients in your plant’s soil. The second year after planting grape vines, you might want to fertilize lightly with a layer of compost or use a balanced 5-5-5 organic fertilizer one time in the early spring just as the vines break dormancy. Fertilizer For Grape Vines In general, grapevines respond well to a well-balanced fertilizer such as 10-10-10. In irrigated vineyards, they … We recommend using Stark® Tre-Pep® fertilizer for your grapes, applied 2-3 inches deep and 10 … For example, in non irrigated wine grape vineyards, some producers prefer to apply the entire amount of fertilizers during winter as a slow-release top dressing. Grapes respond strongly to vermicompost and vermicompost tea foliar sprays. In other words, grapes love worms and soil biota more than synthetic fertilizers.