Do I pinch out the centre of my petunia seedlings?

[Sneezecakesmum]

They are around 20 cm high and leggy. Can't plant them out as it still frost risky. They are for pots. One already has a flower bud!

If I pinch off the top will they bush out?

Yes they should bush out if you pinch them out

Thank you thank you thank you.

I will pinch out immediately.