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Watering & pH

How to water cannabis (without rotting roots)

The single most common rookie mistake — and how to avoid it.

1 min read2026-05-2638 views

Cannabis hates wet feet. Overwatering kills more seedlings than every pest combined.

Over- vs under-watering
Overwatered
  • Droopy leaves with curled tips
  • Yellowing lower leaves
  • Pots stay heavy for days
  • Slow growth, root rot risk
Underwatered
  • Droopy leaves that perk up after a drink
  • Crispy edges
  • Pots feel light
  • Recovers fast — less dangerous
  1. 1
    Water until 10–20% runoff
    Soak the whole pot, not just the top inch.
  2. 2
    Wait for the pot to get light
    Often 2–4 days indoor, 1–2 days outdoor.
  3. 3
    Water again
    Wet/dry cycle drives root growth.
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