Due to safety restrictions & unprecedented high volume, shipping times may be delayed Call: 707-826-9998 - weborders@northcoasths.com Orders Wish Lists Sign in or Register Search CATEGORIES OVERSTOCK ACCESSORIES POST HARVEST NUTRIENTS LIGHTING PROPAGATION PEST CONTROL BIOLOGICALS IRRIGATION POTS & TRAYS ENVIRONMENTAL GROWING MEDIA ABOUT US LOCATIONS CONTACT US FARM-DIRECT SERVICES GROWMIES COMMUNITY HOT NEWS Previous Next 12 SCIENCE YOUR SOIL Knowledge is power, and knowing what nutrients your soil has & what your plants uptake is the power professional gardeners need. EMPOWER YOUR FARM HUMBOLDT AG SUPPLY What to put in the ground, how much, and when? HumAg can support all of your soil fertility needs with our comprehensive product offerings. GET BULK AMENDMENTS FARM-DIRECT PRICING Being #1 means getting the lowest prices possible. You can do it by becoming a Farm-Direct customer, with prices too low to publish. 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PURPL Scientific PURPL Scientific Pro Instant Potency Measurement System Kit $1,650.99 $1,345.50 APOLOGIES, WE SEEM TO BE OUT OF STOCK GreenGro Hybrid Bloom, 2lb $25.00 APOLOGIES, WE SEEM TO BE OUT OF STOCK GreenGro Hybrid Veg, 2lb $25.00 ADD TO CART NUTRIENTS HOT CATEGORIES Maxsea Maxsea Bloom (3-20-20), 20 lb $169.00 Maxsea Maxsea All Purpose (16-16-16), 20 lb $169.00 Maxsea Maxsea Bloom (3-20-20), 1.5 lb $17.99 Maxsea Maxsea All Purpose (16-16-16), 1.5 lb $17.99 GreenGro Nature's Pride Bloom (2-5.5-5.5), 5 lbs $33.97 Maxsea Maxsea Bloom (3-20-20), 50 lb $283.40 LIGHTING HOT CATEGORIES Gavita Gavita Pro 1700e LED 120-277 Volt $1,399.00 Growers Choice GC: ROI-E720w LED 120-240v $1,099.00 Luxx Luxx: 645W Led Pro 120-277v $1,099.00 Dimlux Dimlux Expert Series 630W Ceramic Metal Halide $999.99 Growers Choice GC: ROI-E680w LED 120-240v $999.00 On Sale! iGrow Induction Lighting iGROW Induction Fixture 4ft 400W w/Bloom Lamp Complete $1,200.00 $800.00 PEST CONTROL HOT CATEGORIES Lost Coast Plant Therapy Lost Coast Plant Therapy 12oz $40.00 $36.99 Lost Coast Plant Therapy Lost Coast Plant Therapy, 1 gal $250.00 $209.99 The Amazing Doctor Zymes The Amazing Doctor Zymes Eliminator Concentrate, 1 gal $129.99 The Amazing Doctor Zymes The Amazing Doctor Zymes Eliminator Concentrate, 32 oz $35.99 Elemental Sulfur Prills 4 lbs $19.25 Lost Coast Plant Therapy Lost Coast Plant Therapy, 32oz $90.00 $81.99 New Products Gavita Gavita SL2 1000e DE 208-240 Volt HR96 $419.95 ADD TO CART Coco Depot GroMat 4'x8'x1/4" Coco grow mat $59.99 ADD TO CART Boldtbags BoldtBags Filter Cone Bag Kits (X-Large) $714.00 CHOOSE OPTIONS Boldtbags BoldtBags Filter Cone Bag Kits (Large) $372.00 CHOOSE OPTIONS Previous Next Featured Products Boldtbags Boldtbags Full Mesh 55 Gallon - 4 Bag Kit $900.00 ADD TO CART Boldtbags Boldtbags Full Mesh 44 Gallon - 4 Bag Kit $810.00 ADD TO CART Boldtbags Boldtbags Full Mesh 20 Gallon - 4 Bag Kit $504.00 ADD TO CART Dynomyco Dynomyco Dynomite Stick - 200g / 7oz $30.00 $26.00 ADD TO CART Growers Choice GC: ROI-E720w LED 120-240v $1,099.00 ADD TO CART On Sale! PURPL Scientific PURPL Scientific Pro Instant Potency Measurement System Kit $1,650.99 $1,345.50 APOLOGIES, WE SEEM TO BE OUT OF STOCK GreenGro Hybrid Bloom, 2lb $25.00 APOLOGIES, WE SEEM TO BE OUT OF STOCK GreenGro Hybrid Veg, 2lb $25.00 ADD TO CART Most Popular Products The Green Scissor Green Scissor Turkey Oven Bags 200 pack 16 in x 17.5 in $120.00 ADD TO CART QUICK VIEW Harvest Keeper Harvest Keeper Vacuum Seal precut BAGS Black and Clear 50 pack 15 in W x 20 in L $62.24 APOLOGIES, WE SEEM TO BE OUT OF STOCK QUICK VIEW Lost Coast Plant Therapy Lost Coast Plant Therapy 12oz $40.00 $36.99 ADD TO CART QUICK VIEW Maxsea Maxsea Bloom (3-20-20), 20 lb $169.00 APOLOGIES, WE SEEM TO BE OUT OF STOCK QUICK VIEW Fiskars Brands Inc. Fiskars Comfort Grip Scissors $17.99 ADD TO CART QUICK VIEW Maxsea Maxsea All Purpose (16-16-16), 20 lb $169.00 APOLOGIES, WE SEEM TO BE OUT OF STOCK QUICK VIEW Maxsea Maxsea Bloom (3-20-20), 1.5 lb $17.99 APOLOGIES, WE SEEM TO BE OUT OF STOCK QUICK VIEW Maxsea Maxsea All Purpose (16-16-16), 1.5 lb $17.99 APOLOGIES, WE SEEM TO BE OUT OF STOCK QUICK VIEW CATEGORIES OverStock 7 Products Accessories 176 Products Post Harvest Nutrients 281 Products Lighting 74 Products Propagation 74 Products Pest Control 91 Products Biologicals 64 Products POTS & TRAYS Bestselling Featured New Arrivals Top Reviewed View All Products Smart Pot Smart Pot Tan 30 gallon $16.59 APOLOGIES, WE SEEM TO BE OUT OF STOCK Smart Pot Smart Pot Tan 3 gallon $4.79 ADD TO CART Smart Pot Smart Pot Tan 5 gallon $5.69 ADD TO CART Smart Pot Smart Pot Tan 7 gallon $6.59 ADD TO CART Smart Pot Smart Pot Tan 20 gallon $12.29 APOLOGIES, WE SEEM TO BE OUT OF STOCK Smart Pot Smart Pot Tan 300 gallons $85.24 ADD TO CART Smart Pot Smart Pot Tan 10 gallon $11.75 ADD TO CART Smart Pot Smart Pot Tan 45 gallon $23.80 ADD TO CART BIOLOGICALS Bestselling Featured New Arrivals Top Reviewed View All Products PROPAGATION Bestselling Featured New Arrivals Top Reviewed View All Products Previous Next NHS has been providing Humboldt County Farmers & Growers with the finest Service, Selection & Solutions since 2001. Our knowledgeable staff can help troubleshoot garden issues and provide product recommendations. Contact us if you have any gardening questions. RECENT POSTS Trim Machine Or Trichome Killer? Nov 9th 2021 Mark Shoptaw Oregon Growmies! Hold off on Humboldt Ag Mar 22nd 2021 AA SUBSCRIBE TO OUR VIP NEWSLETTER Get the latest updates on new products and upcoming sales, including Free Perks, Join our VIP Club Email Address NAVIGATE About Us Locations Contact Us Farm-Direct Services Growmies Community Sitemap CATEGORIES OverStock Accessories Post Harvest Nutrients Lighting Propagation Pest Control Biologicals Irrigation Pots & Trays Environmental Growing Media CONTACT INFO Northcoast Horticulture Supply, Inc 513 K St. Arcata, CA 95521 Call: 707-826-9998 weborders@northcoasths.com LOCATION POPULAR BRANDS House & Garden General Hydroponics GreenGro Boldtbags Sparetime Supply Aurora Innovations BotaniCare Mad Farmer Earth Juice (Hydro-Organics) Humboldt Ag Supply View All © 2021 NHS-Hydroponics.