Myth
Potted plants stain the exterior walls of buildings. They’re not meant to keep in the windows or grills.
In urban cities, especially Mumbai, several housing societies have banned houseplants.
Residents are discouraged to keep potted plants in the exterior fittings of the buildings such as window grills or panes, a/c ducts and sometimes even balconies.
The primary reason behind such intentions are to avoid mud marks as well as reduce weight on the exterior walls of buildings.
Fact
Potted plants without plates underneath and overwatering are the main reasons for causing stains on walls.
While placing plants on windows, balconies or terraces, one must always invest in plates or trays to collect the excess water. During summers, this excess water can also help birds to quench their thirst. However, we recommend to keep the trays clean periodically of this water to avoid breeding of any insects or pests.
Second, avoid flood irrigation or pouring large amounts of water in one go. It will not only save you from creating those ugly stains but will also from eroding nutrients from the soil.
Keeping these two factors in mind, one can create a green window without affecting the beauty and integrity of building walls.