You have to decide the climate to grow grapes. They can't be grown in extreme condition and need the right climate. Frost can cause problems to the grapes; hence, the grapevines should not be planted in winter. Planting a grapevine should be done when the climate is constantly warm as the fruits require proper sunlight to ripen. Plant them in early spring.
Grapevines require a lot of moisture. If they seem too dry, soak the rootstock in water if required; do not soak them for more than a day to avoid the danger of rotting. Also, do not leave them out in the open for more than a day―the grapevine may dry.
Observe leaves of the plant to ensure that grapevine gets proper nutrients. The leaves should be dark green. If the color starts fading, add fertilizers. There are chemical-based fertilizers in the market, but you can use compost. Add 5-6 inches compost to the soil for the required nutrients.
Although all these tasks require constant efforts and patience, the entire experience will be worthwhile once the vines bear fruit.