Roses (Rosa species) are susceptible to a number of pests, diseases and disorders. Many of the problems affecting roses are seasonal and climatic. Some varieties of roses are naturally more resistant or immune than others to certain pests and diseases. Cultivation requirements of individual rose species and cultivars, when observed, often assist in the prevention of pests, diseases and disorders.

Pests

Insects that affect roses are often considered pests.

Diseases

Bacterial diseases

Fungal diseases

Nematodes, parasitic

Plant-parasitic nematodes include several genera and can be detrimental to plants – from attacking plants, acting as vectors spreading plant viruses to endoparasites.

Phytoplasma, viruses, and virus-like diseases

(And graft-transmissible pathogens [GTP])

Environmental disorders

Bare-root roses: Plant in late autumn at leaf fall, and from late winter to early spring, before growth resumes. Avoid planting in the middle of winter when the ground is frozen. Containerised and container-grown roses: Plant all year round, provided the ground is neither frozen, nor very dry.

Miscellaneous diseases and disorders