Leaf Curl

Visual reference slot

Needed asset: Leaf Curl Pattern Guide comparing taco, canoe, claw, droop, twist, cup, and wilt with likely context checks.

Field checklist

• Name the posture instead of saying “curl.”
• Record canopy zone, time of day, and speed of onset.
• Check whether stems are rigid, soft, brittle, or normal.

Measurements to pair

• VPD, temperature, RH, airflow, PPFD.
• Substrate moisture, irrigation timing, EC/pH.
• Fan direction and recent environment swings.

Common mistakes

• Treating curl as a nutrient issue first.
• Ignoring heat/light and water balance.
• Confusing droop from dryness with droop from saturation.