Grenache
Grape (Wine) in the US

You're starting these from seed, mind, not like some veg where you can get plugs. You'll want to sow indoors, usually in March or April, depending on your USDA zone and when your last frost hits. For zones 5-7, that's generally March to May. Folks in warmer zones like 9 or 10 might sow earlier, February or even January, or later in the fall. Plant your seeds about an inch (2.5 cm) deep in good seed compost, keeping them warm, around 70-75°F (21-24°C). This can take a while, so don't fret if they don't pop up straight away, like I say, patience is key here.

Once your little seedlings are up and running and have a couple of true leaves, you can prick them out into individual pots. Keep them protected, maybe in a cold frame or a sunny windowsill, hardening them off gradually before planting them out after all danger of frost has passed. Grapes need a good sunny spot and plenty of room to grow, so think about a trellis, arbor, or wires for support. They're going to be there for years, easily three years before you see a proper harvest, so get that structure right from the start.