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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

Nectar for the Gods Poseidonzime Foliar Spray 0-0-0.5 - 1 Gal
In Stock: 24
$112.04 / $28.01 per unit
(minimum purchase of 4)
Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1 - 142 Oz Concentrate - OMRI Listed
In Stock: 28
$194.92 / $48.73 per unit
(minimum purchase of 4)
Royal Gold Crown Jewels Grow Fertilizer 3-2-2 - 10 lb
In Stock: 80
$142.08 / $35.52 per unit
(minimum purchase of 4)
Down To Earth Blood Meal 12-0-0 Organic Fertilizer - 20 lb - OMRI Listed
In Stock: 19
$56.28 $73.69 -24%
SuperThrive Vitamin Solution 0.5-0-0 - 16 Oz
Out of stock
$44.60 $46.99 -5%
FoxFarm Cultivation Nation Bloom Fertilizer 0-5-4 - 16 Oz
In Stock: 192
$151.32 / $12.61 per unit
(minimum purchase of 12)
Big Foot Mycorrhizae Gold + Beneficial Bacteria Root Inoculant - 5 lb
In Stock: 46
$299.70 $463.99 -35%
FoxFarm Grow Big Hydroponic Fertilizer 3-2-6 - 32 Oz - Concentrate
In Stock: 356
$406.56 / $33.88 per unit
(minimum purchase of 12)
True Organic Raised Bed Plant Food - 4 lb
In Stock: 1230
$63.42 / $10.57 per unit
(minimum purchase of 6)
Biomin Iron Micronutrient Supplement - 2.5 Gal - OMRI Listed
In Stock: 7
$128.53
HDI MotherPlant Nutrients Part B - 32 Oz
In Stock: 66
$185.52 / $15.46 per unit
(minimum purchase of 12)
HDI MotherPlant Nutrients Part A - 2.5 Gal
In Stock: 24
$163.48 / $81.74 per unit
(minimum purchase of 2)
HDI MotherPlant Nutrients Part B - 1 Gal
In Stock: 8
$170.76 / $42.69 per unit
(minimum purchase of 4)
Plant Success Great White Premium Mycorrhizae Concentrate - 32 Oz
Out of stock
$225.42 $276.29 -18%
South Cascade Organics SLF-100 Liquid Fertilizer - 2.5 Gal - OMRI Listed
In Stock: 4
$503.68 / $251.84 per unit
(minimum purchase of 2)
FoxFarm Beastie Bloomz Fertilizer 0-50-30 - 6 Oz
In Stock: 575
$273.36 / $22.78 per unit
(minimum purchase of 12)
Sipco Hygrozyme Concentrate Horticultural Enzyme Formula - 20 L
In Stock: 6
$1,109.07 $1,927.27 -42%
FoxFarm Soluble Fertilizer Trio Pack Nutrient Kit - 1 lb Each
In Stock: 27
$1,062.06 / $177.01 per unit
(minimum purchase of 6)
Royal Gold Crown Jewels Bloom Fertilizer 1-4-2 - 10 lb
In Stock: 24
$142.08 / $35.52 per unit
(minimum purchase of 4)
BioAg TM-7 Micronutrient Supplement - 300 g
In Stock: 24
$387.00 / $32.25 per unit
(minimum purchase of 12)
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