What about the feng shui of the concrete grape trellis on the roof?

In real life, we can not only shade the sun, but also experience the fun of planting and enjoy the delicious grapes under the grape trellis. Happy! But from the perspective of feng shui, it is very different. Because grapes are entangled plants, sometimes spraying drugs will affect people's health, and not spraying drugs will be afraid of pests. In the sun, entanglement and pests are taboo. The roof is as long as the head. Isn't this bad luck or something?