FoxFarm Grow Big Hydroponic Fertilizer
Vegetative stage liquid NPK 6-4-4 for hydroponics, in 1 gallon (~4kg) jugs. HTS 3105.90.00 as NPK fertilizer in retail ≤10kg for specialty growers. Supports rapid vegetative growth in soilless systems.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If urea-based without significant P/K
Urea fertilizers per note 2(a)(viii) use 3102.50 if not true NPK blend.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Specify 'for hydroponic use' but classify by chemistry, not end-use
• Test for heavy metals; EPA limits apply to all fertilizers
Related Products under HTS 3105.90.00
Espoma Holly-Tone Acidifying Fertilizer NPK 4-3-4
Organic-mineral blend NPK 4-3-4 with sulfur for acid-loving plants, 18 lb bag but sold in 4kg retail packs. Under HTS 3105.90.00 for NPK in ≤10kg packages. Lowers soil pH for azaleas, rhododendrons.
Advanced Nutrients pH Perfect Grow Micro NPK
Three-part hydroponic base nutrient NPK blend (Grow/Micro/Bloom), each 1L bottle ~1kg. HTS 3105.90.00 as set of NPK fertilizers ≤10kg total. Auto-adjusts pH for cannabis/veg crops.
Dr. Earth Home Grown Tomato Fertilizer NPK 4-4-4
Organic 4-4-4 NPK with microbes/probiotics in 4kg bags for vegetables. HTS 3105.90.00 for balanced NPK retail fertilizer ≤10kg. Builds soil health over seasons.
General Hydroponics Flora Series Trio
FloraGro/Bloom/Micro NPK liquids set, total 12L but retail 3x1.3kg kits. HTS 3105.90.00 as NPK combination ≤10kg. Standard for commercial hydro.
Down to Earth Bio-Live 5-4-2 Fertilizer
High-nitrogen organic NPK 5-4-2 with worm castings, 5kg bags. HTS 3105.90.00 retail NPK. For soil biology enhancement.
Gaia Green All Purpose 4-4-4 Powder
Dry organic NPK 4-4-4 powder, 2kg pails. HTS 3105.90.00 ≤10kg. Slow-release granulation.