Eating grapes is supposed to increase the frequency of oracular dreams. Alternatively, according to folklore, eating grapes or raisins aids concentration and conscious alertness. In a dream this may mean improved prophetic abilities or an increased need to focus on studious matters, respectively.
The abundance of grapes on the vine shows that the positive energy put toward your goals will reap rewards.
Fortitude shared with those around you. In a garden, grapes strengthen the hardiness of most nearby plants.
An emblem equated with Bacchus or Dionysus, both of whom had rather roguish natures, being fond of wine, song, and laughter.
For the dreamer, this can reflect more social times or an improved sense of well-being accompanied by playfulness.
If the grapes are tart, this reflects a similarly caustic attitude (e.g., being full of “sour grapes”).... The Language of Dreams
1- To sec grapes in a dream generally indicates that there is a need for celebration.
The grape is the fruit most closely associated with Bacchus or, in his Greek form, Dionysus who was the god of conviviality. I’o dream of grapes indicates the searching for fun, laughter and creativity in our lives.
2- Grapes appearing in a dream can represent sacrifice. We need to give something up in order to achieve what we are really looking for. Wine is often taken to represent such sacrifice since it has a close affiliation with blood.
3- Grapes, representative as food of the Gods, can symbolise wisdom and immortality.... Ten Thousand Dream Dictionary