How to Irrigate Grapevines

Grapevines thrive in well-drained soils. Though the plants are drought-tolerant, they do require some moisture to fruit successfully. Providing even soil moisture throughout the summer and fall growing seasons prevents the soil from drying out. Although the vines survive overly dry soil, the plants may produce less fruit or fruits with inferior quality. Over-watering is even more detrimental to the plants, as over-watered grapes are prone to root rot and fungal diseases that infect the foliage and fruit.

Garden hose

Instructions

- 1
  Survey the weather conditions. Grapes require approximately an inch of water every two weeks if there has been less than an inch of natural rainfall in the preceding 14 days.
- 2
  Water the grapes at the base of the vines. Avoid spraying water on the foliage or developing fruits. Aim the hose at the soil by the base of each vine or use a drip irrigation system that delivers water directly to the soil.
- 3
  Provide approximately an inch of water. The top 6 to 10 inches of soil require moistening during each irrigation during the first year after planting. Moisten the top 12 inches of soil for established vines two years and older, as these have a deeper root system.

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