pests-ipm
Aphids – Veg
Aphids cluster on soft tissue, produce honeydew, and can trigger sooty mold while weakening growth through sustained sap feeding. This page emphasizes Veg decision support for cannabis cultivation. Context focus: Veg production constraints and controls.
Definition
Aphids – Veg
Aphids cluster on soft tissue, produce honeydew, and can trigger sooty mold while weakening growth through sustained sap feeding. This page emphasizes Veg decision support for cannabis cultivation. Context focus: Veg production constraints and controls.
Why this matters: Use this page to compare lookalikes, verify visual patterns, and choose the safest next checks before changing inputs.
Symptom checklist
- • Soft-bodied insects cluster on shoots, petioles, or leaf undersides.
- • Sticky honeydew appears on leaves or nearby surfaces.
- • Sooty mold can develop where honeydew persists.
- • New growth can curl or deform under pressure.
- • Colonies expand quickly if not disrupted early.
- • Visible colonies on tender growth and protected leaf areas.
Likely causes
- • Insufficient quarantine and early scout response.
- • High availability of tender growth without suppression.
- • Movement between rooms/tools without sanitation discipline.
Visual reference gallery
Hero reference for Aphids – Veg
Credit: BudGuard visual-library-v1 handoff
Closeup reference 1 for Aphids – Veg
Credit: BudGuard visual-library-v1 handoff
Closeup reference 2 for Aphids – Veg
Credit: BudGuard visual-library-v1 handoff
Pattern diagram for Aphids – Veg
Credit: BudGuard visual-library-v1 handoff
Confirm steps
- • Inspect underside leaves and shoot tips with a loupe.
- • Check for honeydew drip pattern below colonies.
- • Review nearby rows for satellite colonies.
What to do now
- • Remove heavily infested tissue where practical.
- • Suppress hotspots using stage-appropriate controls.
- • Improve sanitation and scouting intervals immediately.
- • Prioritize corrective actions compatible with Veg workflows.
Prevention
- • Strict intake quarantine and inspection.
- • Routine scout counts on shoot tips and underside leaves.
- • Keep ant and secondary vector pressure controlled where relevant.
- • Embed Veg-specific monitoring checkpoints in weekly QA.
Lookalikes and how to tell
- whiteflies: Compare symptom location, speed of progression, and tissue type before selecting a likely cause.
- mealybugs: Compare symptom location, speed of progression, and tissue type before selecting a likely cause.
- thrips: Compare symptom location, speed of progression, and tissue type before selecting a likely cause.
- unknown: Compare symptom location, speed of progression, and tissue type before selecting a likely cause.
FAQ
What is the first thing to check?
Verify the strongest visible pattern and where it starts (new growth, old leaves, canopy zone, or root zone).
What if multiple causes seem possible?
Run lookalike checks and prioritize the fastest, lowest-risk confirmations before changing feed or environment.
When should I upload photos?
Upload when the pattern is unclear or mixed so you can get evidence-quality feedback plus the most relevant guides and compare links.
Reference tables
Measurement notes
| Metric | Interpretation |
|---|---|
| Use pH and EC trend checks for root-zone interpretation. | Use pH and EC trend checks for root-zone interpretation. |
| Use PPFD/DLI mapping for top-canopy stress cases. | Use PPFD/DLI mapping for top-canopy stress cases. |
| Track temperature and RH trends by lights-on/off phase. | Track temperature and RH trends by lights-on/off phase. |
Source: BudGuard guide synthesis
Stage notes
- Seedling: If seen in seedlings, prioritize gentle corrections and close monitoring.
- Veg: Veg stage benefits from repeat observation to confirm progression direction.
- Flower: Flower stage requires balancing correction speed with quality protection.
- Drying: For post-harvest stages, use strict handling and spacing controls.
Medium notes
- Soil: Watch dry-back consistency and root-zone aeration.
- Coco: Track fertigation rhythm and runoff trend stability.
- Hydro: Prioritize reservoir hygiene and oxygenation stability.
- AutoPot: Verify valve behavior, filtration, and line balance.
- Living soil: Avoid abrupt chemistry swings and maintain moisture rhythm.
What to measure
- • Use pH and EC trend checks for root-zone interpretation.
- • Use PPFD/DLI mapping for top-canopy stress cases.
- • Track temperature and RH trends by lights-on/off phase.
Evidence and references
Official docs
Community methods
- • BuildASoil — Operational context (00:00:00-00:03:30)
- • MrGrowIt — Field observations (00:00:00-00:03:30)
Related guides
Glossary
BudGuard provides educational support only, not diagnosis.
Photo recommendations
- • Close-up of primary symptom texture with sharp focus.
- • Underside or interior view when relevant to differential diagnosis.
- • Mid-range branch or cola context around affected tissue.
- • Whole-plant image showing spread pattern and canopy position.
- • Repeat image set after 24-48 hours from the same angles.