The idea is to see how the branches and leaves will grow.

Do you know how many wonderful ideas grow out of failure?

For every moment the terrible idea of being left behind grew stronger.

But at the back of her mind the idea was growing, taking shape.

An idea had come to glow and grow in his mind.

A crazy idea grew on him with the force of an obsession.

Peter studied them, an idea growing in the back of his mind.

From this experience grew the idea for another Bond story.

The idea of putting college players on trading cards is growing.

However, in the back of his mind, an idea had been growing since yesterday.