Grodan Starter Mini-Blocks MM40/40 1.5"x1.5"x1.5", pack of 45

Starter MINI-BLOCKS can sit in a tray (flat) without support for easy starting of seeds and cuttings. They are individually wrapped in white plastic to minimize algae growth. For best results put them on the flat side of the GRO-SMART Tray to ensure good airflow around the cubes. Remove wrapping and transplant into any loose media such as GROW-CUBES or GROW-CHUNKS, or leave wrapping on and set on top of a larger GRO-BLOCK. These cubes are popular for production of aquatic plants. The advantage MINI-BLOCKS have over A-Ok Starter Plugs and MACROPLUGS is that MINI-BLOCKS can sit in a tray without support.

Whether starting your seeds and cuttings in A-OK Starters, Macroplugs, or Mini-Blocks it is a good idea to transplant into a 3” or 4” block. You know it’s time to transplant to the Gro-Block when roots coming out of the starter are about 1” long. Just place your Mini-Block on top of the 3” or 4” block without the hole, or your Macroplug/A-OK into the 3” or 4” block with the hole and watch your plant flourish.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.


  • Item #: RWMM4040
  • Manufacturer: Grodan/Pargro

Grodan Starter Mini-Blocks MM40/40 1.5"x1.5"x1.5", pack of 45

Price: $8.85
Sale Price: $8.22
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