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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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Soil Amendments

General Hydroponics MaxiGro 10-5-14 Base Nutrient Powder - 50 lb
In Stock: 19
$273.22 $466.35 -41%
FoxFarm Happy Frog Soil Conditioner - 3 cu ft
In Stock: 2168
$22.71 $25.49 -11%
Coast of Maine Quoddy Blend Organic Lobster Compost - 1 cu ft - OMRI Listed
In Stock: 392
$84.70 / $16.94 per unit
(minimum purchase of 5)
General Hydroponics MaxiBloom 5-15-14 Base Nutrient Powder - 50 lb
In Stock: 35
$273.22 $467.66 -42%
Down To Earth Granular Humic Acids Organic Soil Amendment - 50 lb - OMRI Listed
In Stock: 78
$45.59 $67.19 -32%
Down To Earth Langbeinite 0-0-22 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 133
$77.62 $105.29 -26%
Down To Earth Bio-Live 5-4-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 220
$108.68 $152.59 -29%
Down To Earth Seabird Guano 0-11-0 Organic Fertilizer - 40 lb - OMRI Listed
In Stock: 209
$66.91 $131.99 -49%
Down To Earth Citrus Mix 6-3-3 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 54
$71.80 $97.99 -27%
Sustane 4-6-4 All-Purpose Fertilizer - 50 lb - OMRI Listed
In Stock: 196
$72.95
Down To Earth Bio-Fish 7-7-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 37
$77.62 $103.99 -25%
Sustane 8-2-4 All Natural Fertilizer - 50 lb - OMRI Listed
In Stock: 114
$100.18
Xtreme Gardening Mykos Granular Mycorrhizal Inoculant - 50 Lb
Out of stock
$399.76 $490.64 -19%
Plant-Prod Epsom Salt Magnesium Sulfate Fertilizer - 50 lb - OMRI Listed
In Stock: 380
$39.30
Big Foot Mycorrhizae Granular Root Inoculant - 50 lb
In Stock: 1
$445.33 $685.19 -35%
Royal Gold Crown Jewels Grow Fertilizer 3-2-2 - 40 lb
In Stock: 27
$130.91 $163.08 -20%
Royal Gold Crown Jewels Bloom Fertilizer 1-4-2 - 40 lb
In Stock: 5
$142.29 $184.32 -23%
Down To Earth Kelp Meal 1-0.1-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 76
$230.04 $321.09 -28%
BioAg Ful-Humix Humic Acid Concentrate - 50 lb - OMRI Listed
In Stock: 27
$379.72 $451.16 -16%
FoxFarm Happy Frog Fruit & Flower Fertilizer 4-9-3 - 50 lb Bag - OMRI Listed
In Stock: 30
$127.06 $148.99 -15%
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