Grodan MACROPLUGS
Best sterile starter medium for indoor seed starting and cloning enthusiasts.
These sterile rockwool plugs take the guesswork out of propagation by balancing moisture and airflow perfectly for delicate starts. While they lack the organic feel of soil, they offer unmatched consistency and cleanliness, making them the gold standard for anyone serious about cloning or seed starting success.
$17.00
at
Garden Supply Guys
Who it's for
- Gardeners prioritizing rapid root growth and healthy plant development
- Growers seeking stress-free transplanting into larger systems
- Indoor cultivators wanting to avoid soil-borne pests and diseases
Who should skip it
- Beginners intimidated by pH balancing and nutrient management
- Sensitive users who prefer avoiding protective gear during handling
- Eco-conscious growers prioritizing biodegradable or sustainable growing media
Performance breakdown
Root Development Speed
Rockwool structure encourages rapid, aggressive root colonization from day one.
Moisture Retention
High-density fibers maintain consistent hydration without becoming waterlogged or heavy.
Ease of Insertion
Pre-cut slits make placing delicate cuttings or seeds effortless and precise.
Sterility Standards
Inert material eliminates risk of soil-borne pathogens or unwanted weed seeds.
Aeration Efficiency
Optimal porosity ensures roots get the oxygen needed to prevent rot.
Transplant Compatibility
Designed to nest perfectly into larger blocks for seamless growth transitions.
Key Specs
SKU
713038
Quantity
50 plugs
Shape
Round
Diameter
1.5 inches
Material
Rockwool
pH Level
5.8
pH Range
5.5-6.5
Drainage
Excellent
Moisture Retention
High
Texture
Medium
Know before you buy
Still have a question?
Ask Metto anything about the Grodan MACROPLUGS before you decide.
