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Day 5 of Seedling: Check Environments / Plant Seeds into Rockwool Cubes

Day 5

Today is the day you will plant into the 1.5” Rockwool cubes if the seedlings have a root 1⁄2” or longer in length. Pay close attention to the details and remember to be gentle with your seedlings. 

Check List:

  1. Soak grodan rockwool cubes in Clonex Solution Mix water for 20 mins. Keep some fresh mix off to the side to re-water the cubes later. Refer to the Seedling Feed Chart. 
  2. Squeeze 40 – 50% moisture from cubes leaving them wet but not dripping. 
  3. Carefully place each seed into the rockwool cube hole root down, ensuring good root to cube contact. 
  4. Peel a small piece of rockwool from the side of the cube and cover the hole. 
  5. Re-hydrate the cubes with that fresh Clonex Mix to ensure good moisture to the root and cube. 
  6. Spray Clone dome lid with R.O or dechlorinated water and replace on the tray, making sure there is a tight seal. 
  7. Double check your environments 


  • Gloves 
  • 1.5” Grodan Cubes
  • Clonex Solution
  • Tweezers
  • Complete Clone Dome Kit
  • Spray Bottle (To Spray Dome Lid) with R.O or dechlorinated water. 
  • pH Meter
  • 5 gallon bucket
  • Measuring devices


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