January or February
People also ask
How do you fertilize grape vines?
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. Keep compost or fertilizer at least 6 inches away from the trunk of the vine. The optimum soil pH (acidity level) is between 5.0 and 6.0.
When should I fertilize my grapes in California?
Nitrogen Application. Grapevines require nitrogen when they grow rapidly during the spring. If you want to fertilize grapes using manure, the University of California recommends applying it in January or February. Apply 5 to 10 pounds of poultry or rabbit manure or 5 to 20 pounds of steer or cow manure per vine.
When should I Feed my grape vines manure?
Grapevines, like almost every other plant, need nitrogen, especially in the spring to jump-start rapid growth. That said if you prefer to use manure to feed your vines, apply it in January or February.
When should you apply plant food for grapes?
Apply plant food for grapes just when the buds begin to emerge in the spring. Fertilizing too late in the season can cause overly extensive growth, which may leave the plants vulnerable to winter injury. Grapevines, like almost every other plant, need nitrogen, especially in the spring to jump-start rapid growth.