Planting Question
 

I have some 4 O'clock tubers that I want plant. I do know I can plant them
directly in the ground but I don't know which way to plant them. Do the
tubers go straight up and down in the hole with the wider end at top OR are
they placed in the ground length wise? Sorry if this is a stupid question,
I
am new to gardening and trying to learn as I go. Thanks