Top 4 Green Roof Plants Top 4 Green Roof Plants

Green roof plants on top of your home can provide you with a multitude of benefits. For one, they add beauty and style to any house or building. They also provide additional insulation by reflecting heat and light, thus helping you conserve energy. Rooftop garden plants also absorb rainwater so there would be reduction in runoff water. Finally, plants diminish air pollution by absorbing carbon dioxide. With all the benefits that are associated with green rooftop gardening, it is about time that you have one for your home as well. Below, you will find a list of all the plants that are ideal for this purpose.

1. Plants for Shallow Substrate Roofs

Roofs that have shallow substrate measuring from 1½  to 4 inches are ideal to be planted with hardy plants that require minimal maintenance. Examples of these are sedums, sempervivum and delosperma. These plants can be sustained by the shallow substrate roofs and then can survive the sunny temperature on top of the roof. Not only that, these plants are also strong enough to endure both hot and cold temperatures as well as stormy weather. You can expect that these plants will look great during most times of the year.

2. Plants for Medium Substrate Roofs

For medium substrate roofs with over 4 inches, plants like dianthus, alyssum, and thymus are suitable. You may also use the previously mentioned sedums, sempervivum and delosperma. All these hardy plants require little maintenance and can withstand strong sunlight on the rooftop. Apart from these hardy plants, grasses and sedges may also be planted in medium substrate roofs.

3. Plants for Deep Substrate Roofs

On flat roofs, you can create roof meadows as long as the roofs can accommodate up to 7 inches of substrate. For this purpose, you should use grasses, sedums, and wildflowers. These plants are great because they are strong enough to tolerate different weather conditions. They can survive intense heat from the sun and powerful winds. Before you create this type of roof garden, it is imperative that you consult first with an architect or engineer since a roof meadow can bear the weight load of 15 lbs. per square foot. Just to be on the safe side, ensure that the building is capable of taking on this kind of weight.

4. Native Plants

Native plants are now also being considered for use for rooftop gardening. Native plant species are excellent because they have adapted to withstand local climates as well as attacks from insect pests and diseases. If you are going to use native plants for your rooftop garden, make sure that  you thoroughly study about it first. Take note of the plants in terms of root structure, water and sunlight requirements and adaptation to elements like wind and heat, and invasive qualities before you choose varieties to use for your rooftop garden.

There are many plant varieties that you can use for your rooftop garden. Make sure that you consider factors like adaptation to elements, aesthetics, and maintenance so you can make the right choices. 

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