A nice selection of plant-centric options for players:

• Dryad: A character race based on the Monster Manual creature, but expanded with subraces for each of the four seasons. The base race is solidly designed, as are the subraces, although the autumn dryad lore hints at more variety than we get in the actual execution.
• Way of the Creeping Vine: A monk subclass which throws in some dryad-esque options. Although Seed of the Creeping Vine sounds a bit gross, overall this is decent.
• Soul of Nature: A sorcerer subclass which is mostly fine, but gives you access to cleric spells instead of druid ones for some reason. (Was this an error?)
• Ancient Parasite: A warlock patron which is functionally more about making you a master of draining life and necrotic damage than plant stuff.
• Monsters: The Ancient Parasite (yes, the patron above) is basically a gigantic, life-draining plant creature, a pretty good high-level threat. The Maneater Snare and Sunflare are also fun new plants to have in the game.
• Magic Items: Probably the most interesting section in the product, though there may be a little too much emphasis on thorns. Items here range from largely flavorful (the Bird Whistle or Wand of Flowers) to intriguing new item concepts (the Thornlash, basically a Thorn Whip cantrip anyone can use).

Overall this is a worthwhile product, if you're looking for more nature and plant-themed options, though the $2.99 asking price might be slightly high. Probably best picked up on sale or as part of a bundle.