How about planting azaleas on the roof?

Planting azaleas on the roof is incompatible with the feng shui of the house below. Besides, a variety of plants on the roof are also a landscape, which has a certain effect on cooling and heatstroke prevention of the houses below.

Rhododendron is a deciduous shrub, which likes shade and is more drought-tolerant. In summer, you can plant it on the roof as long as you shade it properly and water it several times. I not only grow flowers in the building, but also grow vegetables.

The picture below shows a corner of my flowers and vegetables: