Grow A Rooftop or Balcony Garden that doesn't cover the whole floor surface. 
Leave room for hanging out and enjoying your garden.

Make the most of your little balcony or terrace spaces by gardening vertically. You can use stacking planters, railing planters, vertical wall planters and hanging baskets. And you can grow a bigger garden by using that concept, along with raised garden beds or containers.

There are very beautiful and functional vertical gardening features that can house your flowers and veggies. Best of both worlds.

Be sure to leave space for a bistro table and chair so that you can relax and enjoy your garden in the evenings.

Use containers that will accommodate adult-size plants, because you really don't want a plant to mature as a dwarf, unless you planted a dwarf. And you don't want to keep up-sizing your planters and making another messy chore for yourself.

Watering is a key consideration. You will have to do it more frequently for container plants because the soil of plants growing vertically is more exposed, and will get dry quickly. Also be sure to check that the pots and urns you use has drainage holes. I have forgotten, and i ended up with drowned plants. Not all pots do. But most at least have a mark on the bottoms and tell you to drill holes, if you wish. Check all planters for the holes before you fill with dirt. Keep drainage-ready containers on top of a dish or saucer if you have neighbors beneath your balcony. Nobody appreciates being watered or having their outdoor dinners spoiled by your rain. But don't let plants sit in water too long. They will certainly rot. Empty the saucers after water is absorbed by the plant after watering or after a rain.

Keep in mind that any support structure has to accommodate a mature plant’s weight, and it should be well- anchored. There are many types of supports from which to choose. In addition to trellises, tripods, arches, and pergolas, there are gazebos, wire cages, netting, and poles. Plants don't have to be climbers to like a support. Any tall or heavy plant appreciates the lift. Anchoring is wise. A good wind or storm can topple the plants, break the pots, and cause injury to your neighbors, their kids or their pets who hang out below your balcony. There are lots of lawsuits waiting to happen if you don't plan well.

Increased vegetable and herb yields. Making maximum use of space means a bigger harvest. Maintaining and harvesting from a vertical planting is also physically easier—plants reach a higher level, so the need to bend and kneel is minimal. I like that.

Foliage and fruit are off the ground, less susceptible to disease and chewing things, and vertical growth provides better air circulation, which means that plants dry faster after watering, reducing the risk of fungus and rot.

Symptoms of disease and pests are easier to spot. More leaf surface is exposed to the sun when plants aren’t growing on the ground.

For photos of my container gardening, check out this page, and for more ideas, visit  this page. 
Remember that you can switch out flowers, veggies and herbs within the design you like, and use them on your balcony, terrace, patio, or in a courtyard.

Here is a suggested reading list to help you begin Vertical Gardening