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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
$292.53 $466.35 -37%
FoxFarm Happy Frog Soil Conditioner - 3 cu ft
In Stock: 1881
$22.99 $25.49 -10%
Down To Earth Neem Seed Meal 6-1-2 Organic Fertilizer - 40 lb - OMRI Listed
In Stock: 1
$52.88 $151.49 -65%
Coast of Maine Quoddy Blend Organic Lobster Compost - 1 cu ft - OMRI Listed
In Stock: 386
$88.15 / $17.63 per unit
(minimum purchase of 5)
Down To Earth Granular Humic Acids Organic Soil Amendment - 50 lb - OMRI Listed
Down To Earth Granular Humic Acids Organic Soil Amendment - 50 lb - OMRI Listed
In Stock: 29
$47.75 $67.19 -29%
General Hydroponics MaxiBloom 5-15-14 Base Nutrient Powder - 50 lb
General Hydroponics MaxiBloom 5-15-14 Base Nutrient Powder - 50 lb
In Stock: 34
$292.66 $467.66 -37%
Down To Earth Langbeinite 0-0-22 Organic Fertilizer - 50 lb - OMRI Listed
Down To Earth Langbeinite 0-0-22 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 50
$80.39 $105.29 -24%
Down To Earth Bio-Live 5-4-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 76
$113.07 $152.59 -26%
Down To Earth Seabird Guano 0-11-0 Organic Fertilizer - 40 lb - OMRI Listed
In Stock: 210
$67.67 $131.99 -49%
Down To Earth Citrus Mix 6-3-3 Organic Fertilizer - 50 lb - OMRI Listed
Out of stock
$74.42 $97.99 -24%
Down To Earth Bio-Fish 7-7-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 33
$80.26 $103.99 -23%
Sustane 4-6-4 All-Purpose Fertilizer - 50 lb - OMRI Listed
In Stock: 192
$72.95
Sustane 8-2-4 All Natural Fertilizer - 50 lb - OMRI Listed
In Stock: 105
$100.18
Xtreme Gardening Mykos Granular Mycorrhizal Inoculant - 50 Lb
Out of stock
$408.85 $490.64 -17%
Plant-Prod Epsom Salt Magnesium Sulfate Fertilizer - 50 lb - OMRI Listed
In Stock: 324
$39.30
Big Foot Mycorrhizae Granular Root Inoculant - 50 lb
Out of stock
$469.31 $685.19 -32%
Royal Gold Crown Jewels Grow Fertilizer 3-2-2 - 40 lb
In Stock: 27
$134.13 $163.08 -18%
Royal Gold Crown Jewels Bloom Fertilizer 1-4-2 - 40 lb
In Stock: 5
$146.49 $184.32 -21%
Down To Earth Kelp Meal 1-0.1-2 Organic Fertilizer - 50 lb - OMRI Listed
In Stock: 63
$239.14 $321.09 -26%
BioAg Ful-Humix Humic Acid Concentrate - 50 lb - OMRI Listed
In Stock: 27
$386.86 $451.16 -14%
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