As a Cactari, you have traits of both plants and humanoids. Your creature type is both Plant and Humanoid

You imbue plants within 30 feet of you with limited sentience and animation, giving them the ability to communicate with you and follow your simple commands. You can question plants about events in the spell’s area within the past day, gaining information about creatures that have passed, weather, and other circumstances.

If a plant creature is in the area, you can communicate with it as if you shared a common language, but you gain no magical ability to influence it.

You have resistance to fire damage. You're also acclimated to hot and arid environments, such as deserts, and you require only one day's worth of water each week.

Your sharp spines can be used to deter attackers in close combat. Your thorns are natural melee weapons, which you can use to make unarmed strikes. If you hit with them, you deal piercing damage equal to 1d6 + your Dexterity modifier, instead of the bludgeoning damage normal for an unarmed strike. In addition, as a reaction to being grappled or hit with a melee attack by another creature, or you grappling a creature, you can deal 1d4 piercing damage to it.