You have become one with the part of nature that is vegetables. You and your circle all eat your greens on a regular basis.

Sunny Person

At 2nd level, you gain the cantrip light. The light produced within a 5 feet radius counts as sunlight for plants, not creatures such as vampires.

Nature's Diet

Beginning at 2nd level, you gain power from eating veggies. Whenever you eat a rations worth of veggies, you can either heal in the same way as if it were a short rest, but you can only expend dice equal to your proficiency bonus, or you can heal 1d4 + 1.

Plant Favor

Starting at 3rd level, whenever you eat have only eaten veggies in the last 24 hours, you can cast the entangle spell without a spell slot, material, verbal, or somatic components. This can be used once per long rest.

Healthy Diet

At 6th level, you gain a stronger body. Whenever you have only eaten veggies for 24 hours, you gain +1 to your AC, no matter if you are wearing armor or not. Also, whenever you roll a 1 on your max health rolls, you can reroll it.

At 14th level, you gain a +2 to AC rather than +1.

Sweeter Casting

Starting at 10th level, when you have only eaten veggies for 24 hours, you gain a +1 to your spell save DC.

Also, whenever a creature must make a saving throw against a damaging spell, and the spell deals have damage on their success, you add proficiency bonus to the halved damage (So long as you've only eaten veggies in the 24 hours).

Great Gaia

Beginning at 14th level, you can summon the great power's of the earth. As an action, whenever you are in a place with vegetation, you can cause most of them to animate and attack for you. Within a 20 foot radius, some plants will animate with either the stats of an awakened tree, awakened shrub, twig blight, or violet fungus. They are unable to understand you, and attack whatever attacks you, and are controlled by the DM. They will revert after 2 minutes.

The amount of plants that animate can have a total challenge rating of 7, with 4 awakened shrubs and 4 violet fungus at max.

Areas such as urban areas will have less vegetation, and mostly be fungus, but forests would definitely cause more awakened trees to sprout. This can be used once per long rest.