I find that I run out of inventory space before gathering enough of a single colour to do a full upgrade. It costs a hella lot of gold too, so not doing a full 10x merge at higher levels doesn't really seem viable.

Originally Posted by MiqDoloran

I find that I run out of inventory space before gathering enough of a single colour to do a full upgrade. It costs a hella lot of gold too, so not doing a full 10x merge at higher levels doesn't really seem viable.

you can use flower gems to expand slot. someone on another discord channel recommended expanding up till 100 slots to me.