A green roof in a hot desert climate needs to focus on plants that can withstand intense heat, low water availability, and strong sunlight while helping to keep the building cool. Drought-resistant succulents, hardy native grasses, and plant species with deep root systems work best because they require minimal irrigation and tolerate harsh sun exposure. Sedum varieties are often chosen because they're tough, low-profile, and can store water in their leaves. When setting up a green roof in such climates, it's important to ensure the soil or growing medium drains well but also retains enough moisture for the plants. Simple DIY checks include feeling the soil moisture and observing plant health – if the plants are shriveling or the soil dries out immediately after watering, adjustments in irrigation or shade provision might be needed. Avoid overwatering, as this can cause root rot or other issues.
If you're considering a green roof project in desert conditions, calling a professional roofer or landscaper experienced in green roofs is a wise choice, especially to evaluate your roof’s load-bearing capacity and waterproofing. Ask the contractor if their proposed plant choices are truly native or adapted to desert climates specifically and how they plan to incorporate irrigation without risking leaks or mold. Also, inquire whether the roofing system will maintain its warranty after green roof installation, since improper attachment or inadequate waterproofing may void manufacturer protections. A knowledgeable contractor should provide a detailed plan for drainage, irrigation, and maintenance that fits your local climate. These discussions help ensure you get a green roof that thrives, efficiently cools your home, and lasts for years without costly repairs.