If you wish to set up a great looking rooftop garden, the first problem you might face is regarding the choice of plants to be put on the rooftop. Several factors would determine your plant choice, including the availability of water and sunlight on your rooftop, general weather conditions, weight your rooftop can handle, etc. There may be several other factors varying per individual needs. So, let us find out the kinds of plants that would suit various conditions and are the best for rooftop gardens.
- Kousa Dogwood
Though it is small to be called a tree, some of its varieties may grow up to 30 feet. You may make a good foundation on the rooftop using Kousa Dogwood (Cornus Kousa). This plant looks amazing with its white or pinkish flowers in summers. During autumn, you get to see fruits and red-purple leaves.
- Harry Lauder’s Walking Stick
Corylus avellana that is commonly called Harry Lauder’s Walking Stick, offers its sculptural appearance on the rooftop. That is because this shrub can twist itself into varied shapes. Another interesting thing is its foliage in heart shape that can grow up to 10 feet.
- Blue Star Juniper
This shrub adds mounds of silver-blue needles on your rooftop. You may grow Blue Star Juniper (Juniperus squamata) on accents and in containers. This shrub can grow up to 3 feet and spreads cool colors on the rooftop.
- Dwarf Hinoki Cypress
Chamaecyparis obtuse, commonly called Dward Hinoki Cypress is slow-growing fanlike foliage. You may need to water it regularly, but otherwise it is quite a low-maintenance plant. It has yellowish green color and can grow up to 3 feet. You may add it to containers with other plants or grow it in corners to brighten up the garden.
- ‘Fanal’ Astilbe
This plant usually blooms around the month of July when it adopts bright crimson color. You should place it in a shadier area and give it moist soil to grow into stalks that are more than a foot long. You may also use it to create the middle of the borders.
- ‘Big daddy’ Hosta
This plant with blue-green leaves is a good way to add foliage to your rooftop garden.
Ajuga reptans has a steady growth, and this plant attracts butterflies and hummingbirds. You may plant its ‘silver beauty’ or ‘bronze beauty’ varieties that provide a colorful tinge to the rooftop garden.
Lavender (Lavandula angustifolia) is a member of the mint family and can thus withstand dry or windy conditions on the rooftop. The gray-green foliage enhances its overall look that offers a nice feel when it is placed in containers or as the garden bed.