Growing grape (american / hybrid)
vine fruit
WINTER CHILL NEEDED
~100–400 hrs
POLLINATION
Self-fertile — one plant crops on its own
Pollination
Self-fertile.
Growing it
Zones 4-8 ('Concord', 'Reliance', seedless hybrids). Hardier and more disease-tolerant than wine grapes; needs a trellis and dormant spur pruning.
Will you get enough chill?
Grape (American / hybrid) needs roughly 100–400 hours between 32 and 45 °F over winter to break dormancy evenly. Check your area with the chill hours calculator. Low-chill breeding has pushed many varieties well below the figure here, so read the plant tag.
Chill and pollination are given at the fruit-type level; specific cultivars can differ. Values are typical ranges for home-garden planning.