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How to Flush Weed PlantsUpdated 5 months ago

Flushing is a crucial technique in cannabis cultivation that involves purging the growing medium of nutrients. This process allows plants to use up stored nutrients, resulting in better flavor and aroma in harvested buds. Flushing can also help correct nutrient imbalances.



Reasons for Flushing

1. Nutrient Imbalance

  • Overabundance of nutrients and improper pH can stress plants
  • Flushing removes excess buildup and restores pH balance

How to Flush for Nutrient Imbalance:

  1. Water pots repeatedly with pH-neutral water
  2. Continue until pH and PPM levels return to acceptable ranges
  3. Resume normal feeding schedule

2. Pre-Harvest Flush

Improves bud quality by removing excess nutrients

Flushing Timeframes by Growing Medium:

MediumFlush Duration Before Harvest
Soil7-10 days
Coco Coir/Rockwool7 days
Hydroponic5-7 days

Flushing Techniques

For Soil:

  • Use 3 times the pot capacity of pH-adjusted water

For Soilless Media (e.g., Hydro, Coco):

  • Simply change the nutrient reservoirs to plain, pH-adjusted water

Pro Tip: Always monitor your plants closely during the flushing process. Adjust the duration if needed based on plant response.

Benefits of Proper Flushing

  1. Improved flavor and aroma of final product
  2. Smoother smoke
  3. Better overall bud quality
  4. Correction of nutrient imbalances

Remember, flushing is an essential step in the cultivation process. Proper execution can significantly enhance the quality of your harvest.

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