Yeah - too deep to be sure. You want to put them just below the surface about 1/8 inch down. I use a pencil to make the starter hole, drop them in, cover with a pinch of seedling mix, and water them in with a spray bottle. Don't be tempted to dig them out. I'll damage any that may otherwise make it. You'll like get a few of the stronger plants to pop through. Give it a week before you start to panic. Keep them damp but don't soak them. Oh and those pots are too big. Start them out in party cups or starter pots. Move them to the bigger pots after 3 weeks or so. Read A beginners Guide to Growing in my signature.