Grape vines are usually started from cuttings or grape stock because seeds require a cold period to end dormancy in order to germinate. However, planting grapes from seeds is a fulfilling and rewarding project. Grapes are usually only grown from seeds when new varieties are being developed, but with patience and commitment, you can plant them in your own backyard. It may take two to three years for your grapevine to produce grapes, but the wait for this succulent fruit is well worth it.
Purchase grape seeds from your local nursery or garden-supply center. Alternately, extract seeds from fresh grapes. Remove the pulp around the seeds gently with a wet towel.
Fill a small pot with seed-starting mixture and plant the seeds in it. Alternately, fill a seed tray with the mixture, plant the seeds to a depth of 1 inch and back-fill to cover them.
Press the soil firmly with your palms to remove any gaps or air pockets. Water the soil in the pot or tray to moisten it.
Place the pot or tray in a clear plastic bag and refrigerate it for 60 to 90 days at 35 to 40 degrees F. Grape seeds require this cold period to end dormancy and germinate.
Remove the seeds from the refrigerator and place them in a room indoors where the daytime temperature is 70 degrees F. The seeds will germinate in five to six weeks. Do not remove the plastic bag covering them and avoid placing them in direct sunlight.
Carefully remove the plastic bag once the seeds germinate, and place the pot or tray in a warm, dry location such as a sunny windowsill. Avoid over-watering the seedlings, but keep the soil evenly moist.
Transplant the seedlings to individual pots once they reach a height of 3 to 4 inches. Keep the plants indoors in a shady area that is sheltered from any wind or rain for a week to ten days before transferring them outdoors into direct sunlight. Space them 8 to 10 feet apart to provide them enough room to grow.
Water frequently, and erect a trellis to train the growing vines to grow upwards.