Reddit reviews Roots of the Swamp Thing

That I can certainly do. /u/FN-2814, tagging you so you spot this in case it's along the lines of what you're after. All of these are listed in chronological order, though I recommend starting with Moore.

Len Wein: The original run, classic bronze age horror comics with fabulous Bernie Wrightson art. Available in the Roots of Swamp Thing hardcover along with Swampy's original appearances pre-solo book. If you want to shell out a little more, there's the Bronze Age omnibus coming out in September which contains the rest of the original Swampy series written by David Micheline after Wein left.

Alan Moore: The biggy, the macdaddy, the golden era. Don't be confused if you read one of the many editions of vol.1 that seemingly start mid-story - Moore's first issue, issue #20, is a wrap-up of the previous writer's final storyline so Moore could set the board up for his first proper story. Available in Alan Moore's Saga of the Swamp Thing Book 1-6.

Rick Veitch: Once Moore's story wrapped, his editor and collaborator Veitch took over and delivered a set of rock-solid stories very much in the same vein as Moore's so try and hunt these down if you're itching for more of that, they're tragically out of print but still available on places like eBay and Amazon Marketplace if you look for the following trades:

Vol.7 - Regenesis


Vol.8 - Spontaneous Generation


Vol.9 - Infernal Triangles

Grant Morrison and Mark Millar: A team consisting of superstar Morrison and future superstar Millar breathed new life into the series in the 90s after a bit of a dull period, with a quick four-issue collaboration before Millar went solo and wrote possibly the best thing he's ever written. The whole thing is one long, violent story and it's collected in the following hardcovers (which are an absolute steal at about 14 bucks each on Amazon right now):

Swamp Thing: The Root of All Evil


Swamp Thing: Darker Genesis


Swamp Thing: Trial By Fire

Scott Snyder: The first New 52 series. I'm not going to spoil the circumstances that bring about the main plotline that runs through the New 52 run because, even though it's a very well known twist, it'll spoil Alan Moore's fantastic very first issue if you're not aware of what happens. Read a plot summary for the DC event Brightest Day, then jump into New 52 Swamp Thing 1-3.

Bear in mind that Vol.3, "Rotworld", is a crossover with Jeff Lemire's Animal Man, the equivalent portion of which is collected in New 52 Animal Man vol.3: Rotworld - only the first and last issues of each story actually overlap, you don't need to read any of Lemire's book to get it, though I recommend it because it's great.

Charles Soule: Best run besides Moore's, in my opinion, though tragically cut short at the end with the ending massively rushed due to cancellation. Still, it's a great run that does more to extend the Swamp Thing mythos than any besides Moore's.

Collected in New 52 Swamp Thing vol. 4-7.