Planting under mulch but on top of cardboard?

I tried a garden for the first time last year, but i didnt really have any mulch on the soil, so everything ended up baking and dying. Last fall, i added brown corrugated cardboard over everything, and then a few inches of wood chips. My guess is that it averages three inches deep now, about four months later. I want to start planting next month, and i have lots of different flowering plant seeds for pollinators. My question is, do i need to make a hole through the cardboard and mulch for every single seed, or would the seeds grow if i just made a hole in the mulch? i am unsure if it is too deep to germinate, and punching a hole in the cardboard is some extra effort, although i imagine its pretty soft now. thanks.

From my experience and seeing experience of other people who use cardboard, you definitely need to cut a hole for each planting area.  I think most folks put some good soil or compost in the hole to plant in.

If you don't put a hole in the cardboard the roots are going to tend to grow on top of it and die.

I've done quite a bit of research regarding the use of cardboard in growing a garden and I would definitely say to punch a hole in the cardboard. I bought a quality used dibble for that purpose which seems like the perfect tool for it.

Or for small seeds, move the mulch away and seed into the soil, and then after the plants have grown a bit, mulch around them.

Alright, I think I was trying to avoid extra work, I should have known better. Thanks for the advice.