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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

Nectar for the Gods Olympus Up pH Up Supplement - 2.5 Gal
In Stock: 6
$142.72 / $71.36 per unit
(minimum purchase of 2)
HDI Ionic PK BOOST Plant Nutrient 0-5-6 | 2.5gal
In Stock: 20
$83.26 / $41.63 per unit
(minimum purchase of 2)
Microbe Life Hydroponics Nourish-L Liquid Fertilizer - 16 Oz
In Stock: 84
$256.80 / $21.40 per unit
(minimum purchase of 12)
Plant Success Great White Premium Mycorrhizae Concentrate - 5 lb
Out of stock
$447.38 $559.52 -20%
FoxFarm Cultivation Nation Micro Fertilizer 5-0-1 - 16 Oz
In Stock: 88
$192.72 / $16.06 per unit
(minimum purchase of 12)
Neptune's Harvest Kelp Meal Multi-Purpose Plant Food 1-0-2 - 4 lb - OMRI Listed
In Stock: 50
$158.94 / $26.49 per unit
(minimum purchase of 6)
Down To Earth Solution Grade Gypsum Organic Soil Amendment - 5 lb - OMRI Listed
Out of stock
$26.50 / $5.30 per unit
(minimum purchase of 5)
MICROBE Life Hydroponics Photosynthesis Plus | 1gal
Out of stock
$311.76 / $77.94 per unit
(minimum purchase of 4)
Roots Organics HP2 Phos Rock 0-4-0 - 1 Gal Concentrate
In Stock: 4
$119.72 / $29.93 per unit
(minimum purchase of 4)
Sipco Hyclean Non-Toxic Line and Equipment Cleaner for Irrigation Systems - 4 L
In Stock: 53
$343.48 / $85.87 per unit
(minimum purchase of 4)
Nectar for the Gods Poseidonzime Foliar Spray 0-0-0.5 - 32 Oz
In Stock: 15
$19.63 $23.99 -18%
Dip 'N Grow Rooting Hormone - 16 Oz
In Stock: 18
$64.72
Down To Earth Fish Powder 12-1-1 Fertilizer - 5 lb
In Stock: 76
$247.55 / $49.51 per unit
(minimum purchase of 5)
General Hydroponics Ripen 0.5-7-6 Bloom Supplement - 32 Oz
In Stock: 136
$29.66 $43.29 -31%
BioAg Bio-SuperSil 0-0-0 Soluble Silicon Supplement - 2.5 Gal
In Stock: 41
$156.95 $202.72 -23%
Down To Earth Citrus Mix 6-3-3 Organic Fertilizer - 5 lb - OMRI Listed
In Stock: 156
$79.44 / $13.24 per unit
(minimum purchase of 6)
HDI Ionic Grow Plant Nutrient 3-1-5 - 5 Gal
In Stock: 49
$154.65 $188.03 -18%
HDI Clonex Rooting Gel - 100 mL Wide Mouth Bottle
Out of stock
$210.84 / $17.57 per unit
(minimum purchase of 12)
Down To Earth Rose & Flower Mix 4-8-4 Fertilizer - 3-Pack of 5 lb
In Stock: 147
$32.15 $42.19 -24%
Emerald Harvest Micro 5-0-1 Base Nutrient - 32 Oz
In Stock: 1
$12.65 $18.00 -30%
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