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Fox Farm

FoxFarm Grow Big

FoxFarm Grow Big

Regular price £18.95 GBP
Regular price Sale price £18.95 GBP
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup

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Description

Build the vegetative structure a big flowering plant needs later

Grow Big is FoxFarm's nitrogen-led liquid concentrate for the vegetative stage, formulated to drive the kind of growth that pays off once a plant switches to flower - thick stems, dense foliage and enough branching to carry a heavy finish. Alongside its core NPK ratio it carries earthworm castings and Norwegian kelp, the combination FoxFarm credits for sturdier, healthier growth rather than fast, leggy stretch.

The vegetative stage sets a plant's eventual ceiling - a thin structure here limits how much weight it can carry once flowering begins, whatever the bloom feed does later. Grow Big is designed to be pushed hard through this stage, building the branching and canopy structure that a phosphorus-led flowering feed needs something substantial to work with.

It is used from early vegetative growth through the switch to flower, kept stable in solution at a controlled pH, then tapered off in favour of Tiger Bloom and Big Bloom. It also works as a supplemental foliar feed at a reduced rate, sprayed on both sides of the leaf away from direct light.

  • High-nitrogen liquid concentrate built for the vegetative stage
  • Contains earthworm castings and Norwegian kelp for sturdier structure
  • Builds the stem strength and branching a heavy flowering finish depends on
  • Suitable for soil and hydroponic systems
  • Can also be used as a supplemental foliar feed at a reduced rate
  • Tapered off as the plant transitions into flowering, handing over to Tiger Bloom and Big Bloom

Technical Specifications

  • NPK ratio: 6-4-4 (Soil formula, as listed here)
  • Key inputs: earthworm castings, Norwegian kelp
  • Growth stage: vegetative through early flower transition
  • Recommended pH: 5.8-6.3
  • Suitable media: soil, hydroponic systems
  • Part of: FoxFarm's three-part liquid programme with Tiger Bloom and Big Bloom
Feed Chart
FoxFarm Grow Big · soil and hydroponics · vegetative growth
Application Per 1 L Per 10 L
The eight printed vegetative applications, across their full printed range 1.3–3.91 ml 13–39.1 ml
NoteFoxFarm publish this as teaspoons per US gallon of water, printing the sequence 2 · 3 · 3 · 2 · 2 · 2 · 2 · 1 tsp per gallon across eight applications — a range of 1 to 3 tsp, or 4.93 to 14.79 ml per US gallon by their own conversion of 1 tsp = 5 mL. The per-litre figures above are that range divided by 3.785. Our copy of the chart could not tie each cell to a numbered week. Maintain a pH of 5.6 to 6.8, never mix pure concentrates, and always add water first. Check pH and EC after mixing.

FREE Express Delivery on orders over £60. We aim to post same day for next-working-day arrival — order by 3pm Mon–Fri. Delivery is 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.