small urban garden on the open balcony. container with blooming lobelia and pelargonium hanging from the railing

balcony beautiful beauty bloom blooming blossom botanical botany box climbed cobaea colorful container decoration design flora floral flower flowerpot fresh garden gardening geranium grandiflorum green greenery greening hanging hobby house leaf lobelia nature open outdoor outside patio pelargonium plant planter pot purple railing season small summer terrace urban vertical view