The pumpkins, of course

You look over the swollen gourds curiously, but despite your efforts, you can't seem to find anyone or anything hiding amongst the vegetables. "Then were did the noise come from?" You ask yourself, finding some comfort in the sound of your own voice. Unfortunately for you, it would appear that your question has alerted something else to your presence.

Slowly, the thick vines surrounding the monstrous pumpkins begin to slither ever closer to your smooth, bare legs. Suddenly your search for intruders is interrupted, as you feel the tendrils winding their way upwards. Instinctively, you let loose a sharp scream, though if anyone can hear you, there's no-one around to come to your aid. The viney assailants continue their greedy climb upwards, the rustling tendrils now coiling all the way up to your knees. You claw desperately at the binding foliage, but to no avail, if they can feel pain, they aren't showing it.

"Lemme go!" It's a pitiful plea for mercy, your chances of escape seem to be growing slimmer by the second. As if sensing their advantage, an eager vine creeps up your thigh, before wriggling into your panties to grind roughly against your tender sex. A rogue shiver goes down your spine, though it's hard to differentiate between fear and arousal at the moment. You trash around violently, struggling to get free before the vine manages to get inside of your velvet slit. Of course, you shudder to think of what the plants truly want with you, but due to the alien bacteria, you know almost anything is possible, and your eyes widen in terror.