You can use climbing plants to make a balcony bloom to life! To create a privacy screen with dense and abundant foliage, it is ideal to plant in the garden/earth just below the balcony rather than in a pot or container and then guide the trunk to the balcony with a support. If the roots have enough space to grow, it is even possible to reach reach several balconies (several floors) with a single plant. To green a balcony, plants are often cultivated in pots, so they require special care. One or more stretched steel cables can be the perfect support for helping the plants to climb. See photos.
Naturally, it takes longer if 'balcony plants' are planted in the ground and only then grow up to the balcony. Nevertheless, it is worth the time and effort, because a balcony plant rooted in the earth is correspondingly far superior to any potted (tub/container) plant in terms of vigour and leaf mass. Balcony balustrades and railings can become completely greened- a thick, lush privacy 'screen' created from nature. Watch as the balcony becomes a green arbour...
In the case of particularly hearty and vigorous 'climbers,' one specimen can often green several 'stories'/floors of a building. Tenants or owners can then individually cut and shape the green on their respective floor. Once established, such greenings are stable over many years or decades and form the desired lush foliage annually. If the soil is rather dry or there is a lack of water for whatever reason, avoid choosing plants that will lignify and no longer develop foliage on the lower part of the trunk over time (like honeysuckle); otherwise, the lower balconies will have nothing of the greenery. Within a normal climate, strong climbing plants (like wisteria) may require multiple summer trimmings per season.
Climbing plants on the balcony also grow well in pots. Balcony annuals (continuous bloomers), like Mandevilla, are ideal, because they need only small pots and no winter protection. For more detailed information, see potted plants. Classic flower (window) boxes can also be a great addition.
Existing railings, columns, and pillars are often themselves already fit to serve as the climbing support for plants. To supplement, wire ropes can be laid vertically or horizontally for the plants. Usually, easy and medium FassadenGrün construction kits are sufficient; for potted plants, also light kits. Sometimes an exterior attachment to the galvanised railing bars is needed, as "drilling" is gernally not advised or possible. The wire ropes can rather be attached to the metal posts via special rubber bandage/belts (photo below). The simplest bamboo trellises, on the other hand, can be installed directly into pots/containers.