Look at it this way. If you let it flower and get seed, but then the plant does you just got all the seed for babies, provided they are firtile. If you cut the flower spike your may get a healthy plant then it stillmay die. I got 3 VFT from wally world that looks pretty decent to be honest. 2 were on clearance for half off and one was reg price of 5 bucks So I spent 10 bucks on 3 plants and 2 are in spike. I planted them in a minibog and left the spikes on. They are in full sun now and so car I havn't seen any sunburn or dieback of leaves and have new leaves growing so I;m going with it. Hopefully will get seed so I can fill out the minibog with typicals. If the plant was cheap I would leave the spike and attempt for seeds. If the plant dies your not out much especialy if the seeds are good.