|Turf Rust / Grass Rust|
Airborne rust spores are easy to see when stuck to humans and pets. Occurring in mid- to late summer, infected leaf blades and stems show yellow, orange, or brown spore-producing blisters.
Although not a human health threat, rust weakens a lawn, making it more susceptible to even worse pests such as grubs and chinch bugs.
Unlike most other plant diseases, rust likes dry weather. Water lawns early in the day and allow time to dry overnight. Fertilize to promote strong active growth, and over-seed with rust-tolerant grass varieties such as Kentucky blue grass or perennial rye grass. Rust can usually be managed; only in extreme cases are fungicides needed.
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