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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

Osmocote Bloom 12-7-18 Fertilizer - 2-3 Month - 50 lb
In Stock: 231
$169.91
BioAg Ful-Power Fulvic Acid Supplement - 55 Gal - OMRI Listed
In Stock: 2
$1,265.39 $1,650.00 -23%
PRO-MIX BRK MYCORRHIZAE Peat/Bark Mix | 2.8cu ft - Loose Fill (48/PL)
In Stock: 113
$36.56
Grow More Super Bloomer 15-30-15 Fertilizer - 1.5 lb
In Stock: 24
$135.36 / $11.28 per unit
(minimum purchase of 12)
TNB Naturals pH Down Granules - Non-Caustic - 1 lb
In Stock: 15
$14.86 $19.99 -26%
Grow More Mendocino N-Cal-Mag Supplement - 2.5 Gal
In Stock: 9
$45.09 $53.07 -15%
Osmocote Blend 22-3-8 Fertilizer Enhanced with QuickStart Nutrients - 5-6 Month - 50 lb
In Stock: 126
$96.70
BioAg Ful-Power Fulvic Acid Supplement - 2.5 Gal (CA/OR/WA Label)
In Stock: 7
$62.78 $81.85 -23%
Soil Mender Rock Phosphate - 5 lb
In Stock: 66
$181.20 / $15.10 per unit
(minimum purchase of 12)
Ferti-lome Root Stimulator and Plant Starter Solution 4-10-3 Liquid Concentrate - 1 Gal
Out of stock
$84.68 / $21.17 per unit
(minimum purchase of 4)
Cutting Edge Solutions® Plant Amp™ Calcium Supplement — 2.5gal
In Stock: 2
$166.68 $210.99 -21%
Espoma Organic Kelp Meal - 4 lb
In Stock: 72
$307.68 / $25.64 per unit
(minimum purchase of 12)
TNB Naturals The Enricher Plant Booster - 250 g
In Stock: 83
$9.21 $24.99 -63%
General Hydroponics Purpinator Anthocyanin and Terpene Enhancer - 2.5 Gal
In Stock: 19
$127.21 $160.04 -21%
Grow More Lucky Bamboo Fertilizer 2-2-2 - 8 Oz
In Stock: 144
$63.00 / $5.25 per unit
(minimum purchase of 12)
Osmocote Blend 19-5-8 Fertilizer - 8-9 Month - 50 lb
In Stock: 42
$124.97
Jack's Professional 21-5-20 All Purpose LX Fertilizer - 25 lb
In Stock: 70
$56.57
GreenGro Biologicals Home & Garden Tomato, Veggie & Herb Fertilizer - 4 lb
In Stock: 1050
$136.30 / $13.63 per unit
(minimum purchase of 10)
Jack's Nutrients 5-50-18 UltraViolet Fertilizer - 2.2 lb
In Stock: 10
$23.10
GreenGro Biologicals Earthshine Biochar Blend Soil Amendment - 2 lb
In Stock: 597
$119.36 / $14.92 per unit
(minimum purchase of 8)
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