Peppers

Capsicum bell peppers CAN and DO come in black - and maybe the seed got mixed up! Is it just one plant and more importantly - what size are they? Are they growing normally - or are they just tiny wee things that are not thriving?
If they are as big and good looking as the rest of your green ones - sounds like they are perfectly normal and it was a just a rogue seed. In which case - enjoy!

I grew some black ones two years ago and they were just as tastey as their red & green counterparts. actally i fibmy daughter grew them along with yellow tomatoes. she was 9 at the time and i thought shed like the novelty. she did :o)