It might surprise you to learn that grape seeds are not easy to propagate. Most grape vines are grown from cuttings or grafting. However, if you are determined to grow your own vines from seeds, it can be done if you follow these directions.
Place your grape seeds in a baggie, seal it and store the baggie in the refrigerator for 3 to 4 months.
Set your seeds on a towel in your home where they will receive direct sunlight for at least an hour a day. Invert a glass jar or other container over the seeds and allow the sun to strike the glass. This will cause the temperature inside the glass to warm up to approximately 90 degrees. Leave the seeds under the jar for 2 days, allowing the sun to warm them for approximately 1/2 to 1-hour each day for 2 days.
Soak your seeds in a mixture of 50% hydrogen peroxide and 50% water for 2 days.
Plant your seeds in a mixture of 1 part sand, 1 part peat moss and 1 part perlite. Plant your seeds approximately 1/2 inch deep and water until the soil is damp but not soggy.
Cut a 2-liter soda bottle lengthwise and place it over your grape seeds as a simple greenhouse. Place your greenhouse 12 inches under a grow light and give your seeds 12 hours of light and 12 hours of dark each day. Keep the greenhouse in a warm area. Be patient. Some grape seeds can take as long a 6 weeks to germinate.
Do not plant your grape seedlings outside until all danger of frost has passed. Grapes like sandy, well-drained soil.