Plant flowers on the roof of your home.

If you want to plant directly on the roof, make a drainage impermeable layer first, and then make a drainage layer, and it is best to spread nutrient soil.

Roof greening should choose plants with not particularly developed roots and good cold tolerance.

For example:

(wood) a low pile of bonsai of pomegranate, pine and cypress.

(perennial herbs) Ophiopogon japonicus, Iris, Paederia, Phytolacca acinosa, Asparagus, Trifolium repens, Oxalis purpurea, etc.

(annual and biennial herbs) colorful grass, purslane, zinnia, kale, Kochia scoparia, jasmine, Petunia, February orchid, etc.