I like to start them inside only about 1 week before going outside because of how fast they grow. For best germination the starting mix needs to be 85F and slightly moist , not wet. I lay them flat and cover them with 3/4 - 1" of mix. Planting in a mound provides good initial drainage and helps the soil to warm up faster. I would put 1 plant per mound. For something big I would go with no less than 300 sq. ft.

I have two Dill's Atlantic Giants growing under LEDs right now. Man, those are some fast-growing plants. I'm worried they're going to crush everything else in there; the bigger one already has three tendrils, lots of little immature flowers, and leaves the size of my outstretched hand!

is it too early for my small atlantic giant plant to have small buds on it?