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Rooftop Gardening Guide
GROWING NOTES
 Rooftop gardens are likely to be exposed to more intense sunlight than those at ground level. Such light is less likely to be filtered by trees or other covering, potentially generating heat levels that can be dangerous to growing plants. If this proves to be the case, it may be wise to invest in a thin shade cloth or netting to provide some protection to your crops. The surface of the rooftop also becomes especially important as dark materials will absorb most sunlight and create a very hot, arid environment.
 Hot, sunny conditions on rooftops can quickly cause plants to dry out. There are several means to address this. Perhaps the most important point to promote good water retention is through the soil. Rooftop gardens should be grown in a lightweight medium that has good water retention. To improve water retention, soil can be amended with a small amount of vermiculite. Self-watering containers are another means to keep your plants moist. Such containers typically need less attention than traditional watering, and provide a source of water that simulates patterns in nature. To protect from moisture loss at the surface of the soil, a layer of mulch can be evenly spread over the surface of the soil.
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