In any given 24-hour period, a Flower Fey must have 2 hours of exposure to sunlight (indirect is okay, spells are okay), and 4 hours in which they can touch soil/dirt/earth to go into a Trance and rest. If either of these conditions is not met, after the first day, you take a level of exhaustion and if you go into initiative, immediately roll once on the Short Term Madness table (DMG p/258). Each full day that passes, add a level of exhaustion; on the third day roll once on the Long Term Madness table, on the fifth day roll once on the Indefinite Madness Table. 

They can eat and drink just like humanoids but this does not replace their need for sunlight and soil. 

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You know the druidcraft cantrip. Starting at 3rd level, you can also cast entangle with this trait. Once you cast it, you can’t do so again until you finish a long rest. When you reach 5th level, you can cast the barkskin spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.

As an action, you can communicate very well with plants of all types without spending a spell slot. You speak with animals in almost child-like bursts and playful phrases. You can speak with fungi in poetry-like, imagery-heavy lyrics. You can speak with insects in very direct, clipped, information-focused communications. 

As an action, you can cast a simple glamour to change your appearance to a humanoid form of your description. You have one form that you can easily assume, and creating a new form would take 1 hour of concentrated effort and mean forgetting the old one. You remain in this form until you spend an action to revert to your true form, or until you die.

You don't do well against fire effects. You roll disadvantage on all fire-based spell effects and damage types that require saving throws.

You are naturally resistant to poisons and toxins. You gain advantage on all saving throws against poisonous effects and spells. 

Your Charisma score increases by 2, and your Dexterity score increases by 1. Flower Fey are considered to be quite stunning, even when the plants they manifest from are grotesque. Their weird beauty is an object of fascination for many. They also are naturally graceful, bending with the breeze and elegantly moving to find the perfect patch of light. 

Your character can speak, read, and write Common and Sylvan (or one other language that you and your DM agree is appropriate for the character).

Your creature type is fey, rather than humanoid. 

Flower Fey range in height from 3-feet tall to over 6-feet tall, similar in size range to halflings and humans. You can choose to be a Small or Medium creature.