Creatures of Ava

This achievement is missable as you cannot return to regions (excluding the grasslands) after you finish the story in the area.

There are 20 plants in the game spread across the 4 regions and each match one of the five crafting material colors. They're not too difficult to find, if you grab everything that glows you should be good, but you can also grab the camera upgrade that shows nearby items and scan around if needed.

I also recommend once you get one of each, return to Ish'ar in the Grasslands for the side-quest Green Thumb. They'll plant the seeds in their garden and you'll have a source of all the plants in the game if you need materials for crafting.

Grasslands
Rosarem (Green) - these are tall and thin, look like green tulips kinda. Very common in grassy areas
Chranor (Gold) - these look like yellow/red pinecones/beehives attached to the side of trees
Lucher (Gold) - Found in caves, golden and glowy, like mushrooms with tendrils coming out the tops
Lindejar (White) - white flowers that grow in water
Palia (Green) - grows near water, the stalk is purple-y with a green flower on top

Jungle
Egeek (Green) - bulbous purple body with about 3 green flowers sprouting on it
Pabut (Green) - Green lily-like flowers with a purple stem/leaves
Apit (Red) - Red flowers, purple stems/leaves, grows in water
Aretam (Red) - small red flowers with purple leaves, found in the Marsh of Shine area
Ispid (White) - cylindrical purple body with a white flower on top, grows on the jade roots (walkways)
Padagas (Gold) - S-shaped with yellow flowers, usually next to trees

Swamp
Laglaa (Green) - looks like a bag with green leaves inside, pretty common
Paloaz (Blue) - looks like blue coral growing behind trees
Aturq (Blue) - Blueberries on a large stem, grows in the northwest areas
Velcla (Red) - small red flowers, grows in the lily pads
Grood (White) - glowing white mushrooms, found in caves

Dunes
Aloreva (Green) - looks like fat aloe vera, pretty common
Gumtam (Blue) - a stump with a blue/white flower on top, usually near cliffs
Poppid (Red) - purple spiky bulbs, near the base of trees
Jasim (White) - white tipped and fern-like, pretty common