Posted: 02/06/2013 at 19:43
It sounds like your border backs onto a wall/fence etc.? If so then put the ones that ill grow tall at the back and the smaller ones at the front. They should all have growing instructions which will tell you eventual height, planting depth/width, conditions etc.
I always dig a whole twice the width of the pot, put some compost in the bottom (home-made or bought), water well - about quarter to half a watering can full (depends on the size of the plant), sprinkle a bit of bonemeal in and put the plant in. Firm it in by hand, add a bit more water, make a cup of tea and read a gardening mag