How does cedar-apple rust grow?
How does cedar-apple rust grow?
Cedar-apple rust has a complex life cycle involving two different host plants. In spring, fungal spores infect apple or crabapple leaves, leading to yellow-orange spots. These spots release spores that then infect junipers, causing galls. The following spring, the galls produce gelatinous horns during wet weather, which disperse spores back to apple species, completing the cycle.

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Scientific Classification

Phylum
Club fungi Class
Pucciniomycetes Order
Rust fungi Family
Pucciniaceae Genus
Gymnosporangium Species
Cedar-apple rust