Diff: Pest and Disease Index
Comparing revision #2 (2026-06-07 19:41:44) with revision #3 (2026-06-07 19:50:07).
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== Pest and Disease Index == |
== Pest and Disease Index == |
Use this index to connect symptoms with likely causes, better photos, and reputable references. It is not a substitute for a diagnostic lab, especially when a plant may need removal or pesticide treatment. |
Use this index to connect symptoms with likely causes, better photos, and reputable references. It is not a substitute for a diagnostic lab, especially when a plant may need removal or pesticide treatment. |
=== Fast triage === |
=== Fast triage === |
* Whole-plant wilting can indicate water stress, root damage, crown issues, heat, herbicide injury, or severe disease. |
* Whole-plant wilting can indicate water stress, root damage, crown issues, heat, herbicide injury, or severe disease. |
* Dark leaf spots with yellowing and leaf drop often suggest [[Black Spot]], but downy mildew, anthracnose, spray injury, and nutrient stress can confuse the picture. |
* Dark leaf spots with yellowing and leaf drop often suggest [[Black Spot]], but downy mildew, anthracnose, spray injury, and nutrient stress can confuse the picture. |
* White powder on leaves, buds, or stems points toward [[Powdery Mildew]]. |
* White powder on leaves, buds, or stems points toward [[Powdery Mildew]]. |
* Orange or dark pustules on leaf undersides and stems suggest [[Rust]]. |
* Orange or dark pustules on leaf undersides and stems suggest [[Rust]]. |
* Distorted new growth can come from [[Rose Rosette Disease]], [[RRD Look-Alikes]], herbicide injury, aphids, thrips, mites, or environmental stress. |
* Distorted new growth can come from [[Rose Rosette Disease]], [[RRD Look-Alikes]], herbicide injury, aphids, thrips, mites, or environmental stress. |
* Skeletonised or windowpane leaf damage often points to [[Sawfly Larvae]]. |
* Skeletonised or windowpane leaf damage often points to [[Sawfly Larvae]]. |
=== Treatment standard === |
=== Treatment standard === |
* Start with cultural controls: resistant cultivars, spacing, pruning for air, watering method, sanitation, and plant stress reduction. |
* Start with cultural controls: resistant cultivars, spacing, pruning for air, watering method, sanitation, and plant stress reduction. |
* Treat only the likely problem. Broad spraying can kill beneficial insects and make mite or aphid problems worse. |
* Treat only the likely problem. Broad spraying can kill beneficial insects and make mite or aphid problems worse. |
* Use the current local label, HSE/UK product authorisation, EU/member-state rules, and local extension guidance before any pesticide use. |
* Use the current local label, HSE/UK product authorisation, EU/member-state rules, and local extension guidance before any pesticide use. |
* For serious or unclear cases, ask a diagnostic lab or plant health authority rather than guessing from one photo. |
* For serious or unclear cases, ask a diagnostic lab or plant health authority rather than guessing from one photo. |
=== Good diagnosis photos === |
=== Good diagnosis photos === |
* Whole plant in daylight. |
* Whole plant in daylight. |
* Close symptom photos plus leaf undersides, buds, canes, crown, soil or pot. |
* Close symptom photos plus leaf undersides, buds, canes, crown, soil or pot. |
* Nearby roses and the affected cane over time for possible RRD. |
* Nearby roses and the affected cane over time for possible RRD. |
* Watering, recent sprays, fertiliser, weather, region, zone, and cultivar if known. |
* Watering, recent sprays, fertiliser, weather, region, zone, and cultivar if known. |
=== Key pages === |
=== Key pages === |
* [[Rose Rosette Disease]] |
* [[Rose Rosette Disease]] |
* [[RRD Look-Alikes]] |
* [[RRD Look-Alikes]] |
* [[Black Spot]] |
* [[Black Spot]] |
* [[Powdery Mildew]] |
* [[Powdery Mildew]] |
* [[Rust]] |
* [[Rust]] |
* [[Downy Mildew and Botrytis]] |
* [[Downy Mildew and Botrytis]] |
* [[Aphids and Spider Mites]] |
* [[Aphids and Spider Mites]] |
* [[Sawfly Larvae]] |
* [[Sawfly Larvae]] |
* [[Japanese Beetles and Rose Chafers]] |
* [[Japanese Beetles and Rose Chafers]] |
* [[Herbicide Injury]] |
* [[Herbicide Injury]] |
'''Use controls lawfully:''' Current local product label/register wins for any pesticide, fertiliser, or soil amendment use. |
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Use controls lawfully: Current local product label/register wins for any pesticide, fertiliser, or soil amendment use. |
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=== Sources === |
=== Sources === |
* [UC IPM: Rose pests and disorders](https://ipm.ucanr.edu/home-and-landscape/rose/) |
* [UC IPM: Rose pests and disorders](https://ipm.ucanr.edu/home-and-landscape/rose/) |
* [UC IPM: Roses diseases and abiotic disorders](https://ipm.ucanr.edu/home-and-landscape/roses-diseases-and-abiotic-disorders/) |
* [UC IPM: Roses diseases and abiotic disorders](https://ipm.ucanr.edu/home-and-landscape/roses-diseases-and-abiotic-disorders/) |
* [Clemson Extension: Rose Diseases](https://hgic.clemson.edu/factsheet/rose-diseases/) |
* [Clemson Extension: Rose Diseases](https://hgic.clemson.edu/factsheet/rose-diseases/) |
* [Clemson Extension: Rose Insects and Related Pests](https://hgic.clemson.edu/factsheet/rose-insects-related-pests/) |
* [Clemson Extension: Rose Insects and Related Pests](https://hgic.clemson.edu/factsheet/rose-insects-related-pests/) |
* [RHS: Rose problems FAQ](https://www.rhs.org.uk/plants/roses/frequently-asked-questions) |
* [RHS: Rose problems FAQ](https://www.rhs.org.uk/plants/roses/frequently-asked-questions) |
[[Category:Diseases]] |
[[Category:Diseases]] |
[[Category:Pests]] |
[[Category:Pests]] |
[[Category:Care]] |
[[Category:Care]] |