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Transplanting Marijuana Plants: Frequency and TimingUpdated 5 months ago


When to Transplant Cannabis

  1. Planting germinated seeds into first pot
  2. Moving seedlings to intermediate containers
  3. Final transplant into flowering pot

Note: Transplant timing depends on plant size and root ball development.

Symptoms of a Rootbound Plant

  • Weak new growth
  • Stunted flowering
  • Reddening of the stem
  • Nutrient sensitivity or deficiency
  • Wilting and drooping leaves
  • Stretching
  • Soil drying out quickly
  • Unusual leaf discoloration
  • Slow water absorption

Regularly check roots by gently lifting the plant from its pot. Tangled or escaping roots indicate it's time to transplant.

Transplanting Cannabis Seedlings

  • Transplant when the 4th or 5th set of leaves appears
  • Check drainage holes for root condition:
    • Healthy roots: white, not tangled
    • Transplant needed: discolored, tangled, or growing out of container

Vegetative Stage Transplanting

  • Move to final, largest pot during early vegetative stage
  • Avoid transplanting during flowering
  • If late for repotting, wait until next grow cycle

Choosing Pot Sizes for Transplanting

  • Pot up to containers 2-3x the size of the previous one
  • Allow minimum 2 gallons of soil per 12 inches of plant height
  • Consider potential strain height when planning

Pot Size Guide by Plant Height:

Plant HeightRecommended Pot Size
0–6″16 oz
6–12″1-gallon
12–24″3-gallon
24–42″5-gallon
42–60″10-gallon
60–84″20-gallon

Key Points to Remember

  • Observe plants closely for transplant readiness
  • Avoid predetermined transplant schedules
  • Be cautious of transplant shock
  • Most indoor strains finish well in 5-gallon containers
  • Outdoor plants may need up to 20 gallons

For visual guidance, check out our transplanting video guide.

Remember, successful transplanting is crucial for healthy plant development and optimal yields. Always prioritize observation and plant needs over rigid schedules.

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