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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...
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10 months 3 days
Grand Rapids, US
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Nutrients & Supplements

Nectar for The Gods Persephone's Palate | 32oz
In Stock: 10
$14.79 $17.99 -18%
Neptune's Harvest Seaweed Plant Food 0-0-1 | 1gal - Concentrate - Makes 128gal - OMRI Listed - (Case of 4)
In Stock: 106
$169.48 / $42.37 per unit
(minimum purchase of 4)
Big Foot Root Boost Nitrogen-Fixing Azospirillum | 5oz
In Stock: 151
$159.90 / $15.99 per unit
(minimum purchase of 10)
FoxFarm Cultivation Nation pH Up Nutrient Solution Adjuster | 32oz - Raises the pH in Nutrient Solution
In Stock: 96
$276.96 / $23.08 per unit
(minimum purchase of 12)
Down to Earth Kelp Meal 1-0.1-2 | 20lb - OMRI Listed
In Stock: 56
$87.35 $121.99 -28%
Royal Gold Crown Jewels Grow 3-2-2 | 10lb - (Case of 4)
In Stock: 84
$138.68 / $34.67 per unit
(minimum purchase of 4)
Emerald Harvest Cal-Mag | 32oz
In Stock: 46
$16.82 $23.00 -27%
HDI MotherPlant Nutrients Part A | 2.5gal - (Case of 2)
In Stock: 24
$159.56 / $79.78 per unit
(minimum purchase of 2)
Down to Earth Bone Meal 3-15-0 | 5lb - OMRI Listed - (Case of 6)
In Stock: 1782
$77.82 / $12.97 per unit
(minimum purchase of 6)
Down To Earth Vegetable Garden 4-4-4 | 15lb - 3pk of 5lb
In Stock: 264
$29.09 $39.39 -26%
South Cascade Organics SLF-100 | 2.5gal - OMRI Listed - (Case of 2)
In Stock: 14
$488.54 / $244.27 per unit
(minimum purchase of 2)
Emerald Harvest Bloom | 32oz
In Stock: 3
$9.37 $14.00 -33%
Plant Success Great White Premium Mycorrhizae | 5lb
In Stock: 44
$434.92 $559.52 -22%
Roots Organics Trinity | 32oz
In Stock: 1
$10.17 $25.99 -61%
Down to Earth Blood Meal 12-0-0 | 20lb - OMRI Listed
In Stock: 136
$54.34 $73.69 -26%
HDI Ionic PK BOOST Plant Nutrient 0-5-6 | 2.5gal - (Case of 2)
In Stock: 33
$68.64 / $34.32 per unit
(minimum purchase of 2)
SUPERthrive Pro-TeKt Nutritional Supplement 0-0-3 | 55gal - The Silicon Solution
In Stock: 5
$1,671.29 $2,392.22 -30%
FoxFarm Soluble Fertilizer Trio Pack | 3pk - 1lb each - (Case of 6)
In Stock: 63
$990.06 / $165.01 per unit
(minimum purchase of 6)
Royal Gold Crown Jewels Bloom 1-4-2 | 10lb - (Case of 4)
In Stock: 40
$138.68 / $34.67 per unit
(minimum purchase of 4)
BioAG Ful-Power Purified Fulvic Acid | 5gal - OMRI Listed
In Stock: 487
$119.37 $162.69 -27%
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