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Grodan Rockwool Starter Mini-Blocks | 1.5' Blocks - Pack of 45 | + Twin Canaries Chart

Free shipping on orders over $29.99

$16.99

$ 8 .99 $8.99

In Stock

1.Size:15 Blocks


About this item

  • 1.5" Mini Blocks – Compact size ideal for starting seeds or rooting clones; perfect for early-stage growth and easy transplanting into larger blocks or systems.
  • Clean and Inert Growing Media – Made from natural stone material with no added soil or organic debris; supports a stable root environment.
  • Balanced Moisture and Airflow – Promotes healthy root development by retaining water while allowing oxygen to flow freely through the block.
  • Compatible with Hydroponic Systems – Works well in soilless setups like drip systems, ebb and flow, and indoor hydroponic gardens.
  • Designed for Easy Transplanting – Use as a bridge between starter plugs and larger Grodan blocks or slabs; fits most standard trays.



Product Description

grodan mini blocks rockwool seed starter
grodan mini block rockwool seed starter
grodan rockwool
grodan for seed germination
grodan rockwool for seed starter
grodan 2 inch rockwool starter plugs

Connie Priebe
Reviewed in the United States on May 31, 2025
Kinda spendy for rock wool. But they did throw in a measuring card so that’s kinda cool. Rock wool is definitely a go to for planters.
Karen Jones
Reviewed in the United States on May 10, 2025
Just starting in the world of hydroponic gardening, and I have watched videoes with people using these, and they were telling the truth when they say thet are amazing!They help with the seedlings and hold moisture really well. Transplanting has been so easy with these!! Will be buying more!
Customer
Reviewed in the United States on March 9, 2025
Does the job.
G
Reviewed in the United States on February 15, 2025
Used these to start my kale lettuce seeds. They come with a tiny hole in the center to simply drop the seeds in, i used a toothpick to press them down snugly. The pods fit perfectly into the seedling starter tray. They are firm, but have enough flex for a nice snug fit. Planted 2 seeds in each pod, wet them down with my aquarium fish tank water and set under an inexpensive grow light. Pics are the results 1 week later. Rockwool is the best. No dirt, no mess, and almost instant seedlings. Little pricey compared to soil but worth every penny IMO.
Robert Tucker
Reviewed in the United States on April 9, 2025
Normally I use alternatives to rock wool but since I’m experimenting with hydro peppers this year I figured I’d give these a try.Benefits: hold moisture, roots have no issue growing through these, they fit nicely in my 3inch net pots and they do not fall apart like other brands.Would recommend
Wesley
Reviewed in the United States on April 15, 2025
It works. However, algae also loves this item
Billy Walker
Reviewed in the United States on November 4, 2024
Great product that does exactly what it supposed too
Jacques G.
Reviewed in the United States on October 27, 2024
Very simple yet effective, allows roots to poke thru and do their thing
Terence Tang
Reviewed in Singapore on November 16, 2020
Receive Goods As Post, Good Buy
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