Before you can visit neighbors and get anything out of it for the event, you need to complete “Chaos She-ory Pt. 1”. This is the quest that comes immediately after “Scientophagy Pt. 3”. You’ll know when you’ve opened up this part of the game because the game will have you visit a neighbor.

You can tap up to 3 mutant plants and leave up to 5 mutant seedlings per town.

Mutant Plants

These are the mutant plants you’ll be trying to tap. They are a bit hard to see because they are tall and skinny. In busy towns it may take you a while to find three mutant plants to tap.

Events like this make visiting neighbors more annoying because it takes more time to find these things, as oppose to just tapping on buildings and moving on.

You’ll also see these things wandering around your own town, so tap them whenever you see them to collect some resources. You will get a notification when you’ve tapped them all, so if you don’t see the message, it means you’ve missed some

Mutant Seedlings

Remember Gremlins from one of the previous Halloween events? That’s basically what these crazy things are. Since we’ve been through this, let’s just jump right to strategy.

You can leave up to 5 per town, but don’t. If you drop one per town you are much more likely to yield a higher reward than if you just overload one town with all you’ve got. The rationale behind this is that if a neighbor sees 5 of these thing bouncing around, they’re going to look for and squash them all. One is easier to get by undetected. Plus, one per town increases your odds that the neighbor you’ve chosen may not check their device in time to squash it.

Conclusion

Let’s not overcomplicated things with anymore information than you need. The only thing I will say is that you can buy mutant seedlings in the shop for donuts, but you shouldn’t. If you can’t earn enough of what you need through normal gameplay, don’t bust into your wallet to make-up for it.

P.S.

If you visit a neighbor and you can’t do anything event related in their town, don’t worry, it just means they aren’t up to date on the event. This could mean you have an inactive neighbor, or just someone who hasn’t unlocked this part of the event. Keep an eye on those neighbors over the next week or so. If you still can’t drop seeds or tap plants in their town, it may be time to add new friends.