When I have grown indoors I never let my plants get more then 2 1/2 foot tall because of space. Ive seen calyx before but not nearly as large as this one, Indoor plants the calyx usely looks like a green hair not like a pod. I mean the things are crazy big and full of crystals, The pic DANIKSWAG added the the type of calyx Ive seen before, The ones on my plant look like big pods. Plus the size of my plant its nearly 6ft tall Ive NEVER let a plant get this big before I'm glad Ive tried it, growing outdoors that is its been a fun experience