They don't have a stockpile, neither stack inside barrels/buckets.
Making them bunch up in little packs inside the inventory would be neat.
Not beign able to stack them and the fact that trellis farming is a pain because we cant harvest a field of it without a click fest makes making pepper not so worth while.
Im making one because I always wanted to have one, my father loves pepper and I like to think he would love having a pepper farm.
PS: The title is just a little click bait.