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Rootline Supply Co.
Rootline Supply Co. provides reliable tools and products for growers, gardeners, and cultivators who care about quality. We’re focused...
6K
1 year
Grand Rapids, US
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Nutrients & Supplements

Down To Earth Langbeinite 0-0-22 Organic Fertilizer - 5 lb - OMRI Listed
In Stock: 36
$75.60 / $12.60 per unit
(minimum purchase of 6)
FoxFarm Bush Doctor Kelp Me Kelp You Kelp Supplement 0.5-0-0.5 - 16 Oz - Concentrate - OMRI Listed
In Stock: 140
$16.58 $19.99 -17%
Down To Earth Fish Bone Meal 4-12-0 Organic Fertilizer - 1 lb - OMRI Listed
In Stock: 36
$43.80 / $3.65 per unit
(minimum purchase of 12)
Big Foot Mycorrhizae Gold + Beneficial Bacteria Root Inoculant - 4 Oz
In Stock: 87
$136.50 / $22.75 per unit
(minimum purchase of 6)
Maxicrop Soluble Seaweed Powder 0-0-17 - 27 Oz - OMRI Listed
In Stock: 6
$311.46 / $51.91 per unit
(minimum purchase of 6)
True Organic Bone Meal 7-7-0 - 3 lb
In Stock: 636
$39.06 / $6.51 per unit
(minimum purchase of 6)
Botanicare Clearex Rinsing Solution - 1 Gal
In Stock: 49
$30.08 $46.58 -35%
Big Foot Root Boost Nitrogen-Fixing Azospirillum - 2 Oz
In Stock: 534
$114.45 / $7.63 per unit
(minimum purchase of 15)
Xtreme Gardening Azos Wettable Powder Root Booster - 2 Oz
In Stock: 60
$211.56 / $17.63 per unit
(minimum purchase of 12)
Xtreme Gardening Azos Red Liquid - 200 mL - Case of 8
In Stock: 40
$1,632.16 / $204.02 per unit
(minimum purchase of 8)
Big Foot Root Boost Nitrogen-Fixing Azospirillum - 10 Oz
In Stock: 19
$9.01 $27.50 -67%
Xtreme Gardening Azos Wettable Powder Root Booster - 6 Oz
In Stock: 48
$324.96 / $27.08 per unit
(minimum purchase of 12)
Down To Earth Liquid Calcium 5% Organic Fertilizer - 2.5 Gal - OMRI Listed
In Stock: 8
$90.06 / $45.03 per unit
(minimum purchase of 2)
True Organic Tomato & Vegetable Food 4-5-6 - 8 lb
In Stock: 201
$51.84 / $12.96 per unit
(minimum purchase of 4)
FoxFarm Bush Doctor Microbe Brew Microbial Inoculant 1-0.3-0.2 - 16 Oz - Concentrate
In Stock: 308
$19.84 $20.99 -5%
FoxFarm Grow Big Fertilizer 6-4-4 - 2.5 Gal - Concentrate
In Stock: 24
$452.24 / $226.12 per unit
(minimum purchase of 2)
Blacksmith Bioscience Armory Beneficial Bacteria Blend - 2 Oz - OMRI Listed
Out of stock
$31.19
Sustane 4-6-4 Flower & Vegetable Plant Food - 5 lb - OMRI Listed
In Stock: 155
$82.08 / $10.26 per unit
(minimum purchase of 8)
Big Foot Mycorrhizae Concentrate Water-In-Root Inoculum - 32 Oz
In Stock: 39
$141.90 / $70.95 per unit
(minimum purchase of 2)
Nectar for the Gods Olympus Up pH Up Supplement - 32 Oz
In Stock: 13
$12.18 $14.99 -19%
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