That tree has a comfortable looking hole in its trunk

You look around wildly, hoping to see something, anything, that you could fuck and spread your spores to. You see a tree with a hole in its side, roughly your size and depth. You'd look for something better, but you can't help it, you have to fuck something NOW!

You stick your cock in the treehole, your member expanding to fill the cavity completely, and you start to hump away, thrusting deep, the tree creaking from your **** as if it were groaning in pleasure, its branches shaking, its leaves falling down to the ground as a pink sponges mass spreads from the hole along its trunk. Eventually the entire tree is a part of you, fused to your body, or rather you fused to it, from the tip of its leaves to the bottom of its roots, a strange pink sponge hand that sticks out of the ground.

But you don't stop there. Soon enough the entire forest is a part of you, all it's animals, all the infected and survivors, a single entity, a pink carpet that blankets that part of the countryside.