Chemical marks on succulent leaves can look unattractive, but they are part of the tradeoff when growers use sprays to protect plants from pests and disease.
The note explains why root drenching and foliar spraying behave differently, and why a treatment that looks cleaner is not always immediately protective.
Good care means weighing appearance, timing, plant safety, and the real pressure from pests or pathogens before choosing a treatment method.