
The provided sources do not specify the best grape varieties for home gardens. However, they emphasize that grapes need 7-8 hours of direct sunlight for sweetness.
The provided sources do not specify how often grapevines should be fertilized for sweetness. However, they indicate that adequate potassium and 7-8 hours of direct sunlight are crucial for grape sweetness.
Grapevines do not grow well in partial shade; they require 7-8 hours of direct sunlight daily for sweetness and proper development. If a grapevine is in shade, the fruits may remain small and sour.