It is raining right now in Southern California, and when it rains people go out into the desert and they spread wild flower seeds, then in the spring when the wild flowers bloom the tourists will come from all over out to the desert to see the wild flowers. Then, the people out in the desert can make money by selling food and water to the tourists, etc.
If there are not any flowers then there will be no tourists, so people go out and spread wild flower seeds when it rains.
Salute,
Tony V.