HortGrow — Nurturing precision

Nutrients · US & Canada

Coming soon — launching January 2027

Three-part nutrients, built for coco.

Base, Build and Bulk — a pre-blended program formulated for cannabis and hemp in coco coir.

Also suitable for rockwool, peat and soilless mixes, and for vegetable and fruit crops.

HortGrow Base, Build and Bulk nutrients

1. Choose your fertilizer

2. Pack size & quantity

Salt-based granular formula, uniformly milled for fast dissolving and free flow. The foundation of the three-part program. Supplies calcium, nitrate nitrogen and chelated micronutrients tuned for the cation exchange of coco coir.

Pack Size

Quantity 

Notes / custom specs

Tailored solutions, personalized pricing: request your custom quote

Nutrients

Feeding Charts

Coco coir, drip or hand-fed. Granular salts — values in grams per US gallon of RO/low-EC water. Dissolve Base fully first, then add Build or Bulk.

StageWeekBaseBuildBulkEC (mS/cm)pH
Clone / Seedling1–20.8 g0.4 g0 g0.6–0.95.8–6.0
Early Veg1–21.5 g1 g0 g1.0–1.45.8–6.0
Late Veg3–42 g1.5 g0 g1.4–1.85.8–6.1
TransitionFlower 1–22 g0.8 g0.8 g1.6–2.05.9–6.2
Mid FlowerFlower 3–62 g0 g2 g1.8–2.25.9–6.2
Late FlowerFlower 7–81.5 g0 g1.5 g1.4–1.86.0–6.2
FinishFinal 5–7 days0 g0 g0 gWater only6.0

Starting guidance only. Adjust for cultivar, climate, irrigation frequency and runoff EC.

Nutrients

Standard Operating Procedures

  1. Hydrate compressed coco with pH 5.8 water until fully expanded.
  2. Pre-charge with Base at 1 g/gal to saturate exchange sites with calcium.
  3. Flush until runoff EC is below 0.8 mS/cm before transplant.