We have created a raised flower bed. I love gardening but wouldn't say Im Experience. You need to be aware of how the sun falls in this space for example we have one side which is shady so i have grown hostas, ferns, huchea (not sure how u spell it) so it has more of a jungle vibe... and the other sunny side has sun loving plants like lupins, allium, foxglove erysimum they come in all different colours, aswell as an erray of spring bulbs like tulips and daffodils, iris, geraniums. Gladiolis, To gather all different colours and textures. I use multi purpose compost when I plant mine and they seem to thrive on that.. and then feed every couple of weeks in growing season.