Can u grow a 9 inch weed plant?

with bud? and if u can how can i do it i have it sprouted now when should i start cuting the leeds off? i dont wanna kil it but i want it too be a small plant cuz im hiding it in my room and its in the open idc if it dont have alot of bud i just atlest want anuff for me and can i just cut the bud off and will it grow more bud again or do i have too grow anotherone :o?