pollination

As explained by the AP, pistachio orchards “can be sustained with minimal water during drought” and their trees “rely on wind instead of bees for pollination and can produce nuts for decades longer.”

"That means if they don't receive pollination, they'll set fewer or possibly no seeds, which means no fruit for us to eat but also no reproduction of those plants for the next generations," Dr Lander said.

Hummingbirds might also expand their range given more plants for pollination.

He added: "We have to do it because nature is critical to our health, our wellbeing, the pollination of our crops, clean water."

On the other hand, Joshua trees rely solely on the yucca moth for pollination.