I meant field of flowers. I solved that issue though, I was using the Poke Radar in edges so I wasn't getting any shaking grass at all. I don't do that anymore and it's gotten better.
I do have a new problem though. I've been chaining for like 12 hours straight, so I know some rapid shaking grass when see it and Skorupi's from rapid shaking grass keep breaking my Phantump chains, even though the Phantumps should be the only Pokes in that kind of grass after the chain is established. It's happened over a dozen times and I check really carefully and they're definitely coming out of the fast shaking grass even though they shouldn't be able to do that. Did they change chaining this gen so multiple types of pokemon can come out of the rapid shaping grass to make it harder? I don't see how chaining is possible anymore if they did.