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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

Great White® Premium Mycorrhizae 25lb Concentrate
In Stock: 11
$2,054.20 $2,482.70 -17%
Grow More® 6-30-30 Fertilizer — 25 lb Bag
In Stock: 22
$108.99 $112.99 -4%
Royal Gold® Earthworm Castings 1cu ft
In Stock: 1525
$24.17 $32.74 -26%
Down To Earth™ Cottonseed Meal 6-2-1 Organic Nitrogen Fertilizer — 20lb
In Stock: 11
$31.03 $42.69 -27%
Grow More® E-Z Wet Soil Penetrant 26 — 32 oz
In Stock: 120
$101.04 / $8.42 per unit
(minimum purchase of 12)
Cutting Edge Solutions® Plant Amp™ Calcium Supplement — 32oz
In Stock: 20
$29.63 $34.99 -15%
Grow More® All Purpose Fertilizer 30-10-10 — 25 lb
In Stock: 731
$66.96 $69.29 -3%
GreenGro™ Pride Lands Premium Potting Soil — 1.5 cu ft
In Stock: 1356
$23.11 $24.99 -8%
Grow More® Hawaiian Bud 5-50-17 — 25 lb
In Stock: 396
$102.83 $133.72 -23%
Down To Earth™ Bio-Turf™ 8-3-5 Natural Granular Fertilizer — 25lb
In Stock: 100
$48.50 $65.79 -26%
Grow More® All-Season's Plant Food 20-20-20 — 1 oz
In Stock: 24
$75.00 / $6.25 per unit
(minimum purchase of 12)
Grow More® Sea Grow All Purpose 16-16-16 — 3 lb
In Stock: 139
$240.36 / $20.03 per unit
(minimum purchase of 12)
Down to Earth™ Shrimp Meal 6-6-0 All-Purpose Fertilizer — 15lb / OMRI Listed®
In Stock: 35
$36.86 $49.99 -26%
General Hydroponics TrueFlo™ Irrigation Line Cleaner 32oz
In Stock: 123
$9.32 $20.00 -53%
Grow More® Mendocino 0-37-37 Fertilizer — 25 lb
In Stock: 9
$117.16 $118.99 -2%
Grow More® Humic Acid 12% — 2.5 gal
In Stock: 8
$25.87
Grow More® Water Soluble Fertilizer 10-52-10 — 25 lb Bag
In Stock: 234
$121.62 $125.99 -3%
Grow More® Mendocino Honey 0.46-0.26-1.86 — 32 oz
In Stock: 68
$9.02 $10.83 -17%
Grow More® Standard Fertilizer 05-50-17 — 25 lb
In Stock: 79
$104.57 $116.43 -10%
Brandt® Manganese Sulfate 31% EDTA Micronutrient Supplement — 50lb Powder
In Stock: 3
$124.32 $138.66 -10%
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