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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: 18
$79.98 / $13.33 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: 131
$17.04 $21.19 -20%
Sustane 4-6-4 Flower & Vegetable Plant Food - 20 lb - OMRI Listed
In Stock: 6
$22.86 $26.99 -15%
SUPERthrive Mag-Pro Nutritional Supplement 2-15-4 - 8 Oz
In Stock: 5710
$91.20 / $7.60 per unit
(minimum purchase of 12)
Down To Earth Fish Bone Meal 4-12-0 Organic Fertilizer - 1 lb - OMRI Listed
Out of stock
$46.68 / $3.89 per unit
(minimum purchase of 12)
Big Foot Mycorrhizae Gold + Beneficial Bacteria Root Inoculant - 4 Oz
In Stock: 75
$145.32 / $24.22 per unit
(minimum purchase of 6)
True Organic Bone Meal 7-7-0 - 3 lb
In Stock: 612
$42.90 / $7.15 per unit
(minimum purchase of 6)
Maxicrop Soluble Seaweed Powder 0-0-17 - 27 Oz - OMRI Listed
In Stock: 6
$319.62 / $53.27 per unit
(minimum purchase of 6)
Down To Earth Rock Phosphate 0-3-0 Organic Fertilizer - 5 lb - OMRI Listed
In Stock: 694
$76.62 / $12.77 per unit
(minimum purchase of 6)
Big Foot Root Boost Nitrogen-Fixing Azospirillum - 10 Oz
In Stock: 19
$10.86 $27.50 -61%
Down To Earth Liquid Calcium 5% Organic Fertilizer - 2.5 Gal - OMRI Listed
In Stock: 6
$110.26 / $55.13 per unit
(minimum purchase of 2)
Big Foot Root Boost Nitrogen-Fixing Azospirillum - 2 Oz
In Stock: 519
$121.95 / $8.13 per unit
(minimum purchase of 15)
Xtreme Gardening Azos Wettable Powder Root Booster - 2 Oz
Out of stock
$215.76 / $17.98 per unit
(minimum purchase of 12)
Nectar for the Gods Olympus Up pH Up Supplement - 32 Oz
In Stock: 12
$12.46 $14.99 -17%
True Organic Tomato & Vegetable Food 4-5-6 - 8 lb
In Stock: 201
$55.04 / $13.76 per unit
(minimum purchase of 4)
Xtreme Gardening Azos Wettable Powder Root Booster - 6 Oz
In Stock: 24
$331.44 / $27.62 per unit
(minimum purchase of 12)
Down To Earth Bio-Fish 7-7-2 Organic Fertilizer - 25 lb - OMRI Listed
In Stock: 236
$46.21 $60.59 -24%
FoxFarm Bush Doctor Microbe Brew Microbial Inoculant 1-0.3-0.2 - 16 Oz - Concentrate
In Stock: 302
$19.80 $22.19 -11%
Botanicare Clearex Rinsing Solution - 1 Gal
In Stock: 49
$31.73 $46.58 -32%
FoxFarm Grow Big Fertilizer 6-4-4 - 2.5 Gal - Concentrate
In Stock: 20
$450.66 / $225.33 per unit
(minimum purchase of 2)
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