Wildflowers

[boringbored]

Will wildflowers down directly into the ground in spring flower that same summer?

sown not down. I haven't got depressed wildflowers!

If they are annuals, yes. Field poppies, cornflowers etc.
They like thin, poor soil and get swamped by weeds, so you need to consider where you sow them, clear the ground and stop grass invading.

It depends on what they are. Some flower in the summer after sowing some the following year.

Personally I've had little success with flowers sown from seed directly into the ground and find bedding plants, bulbs, and plug plants by far the more successful option.