Skip to product information
1 of 3
Green Planet

Green Planet Dense Late Flower Hardening Additive

Green Planet Dense Late Flower Hardening Additive

Regular price £12.90 GBP
Regular price Sale price £12.90 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

In stock

Size

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

View full details

Description

Hardens flowers in the last stretch rather than growing them

Green Planet Dense is a soluble powder used in late flower to firm and harden what the plant has already built. Where a bulking additive works through the middle weeks, Dense works at the end, combining phosphorus and potassium with silica and magnesium to tighten structure.

Key Benefits

  • Late-flower specific - aimed at the final weeks, so it complements a bulking additive rather than duplicating it
  • Silica for structure - tighter, harder flowers that hold their shape after drying
  • Soluble powder - no water freight in the product, which is why the dose per litre is so small
  • Magnesium included - keeps leaf colour while phosphorus and potassium run high
  • Works with any base feed - mineral or organic

Flowers that soften and shrink on the dry

A flower that feels firm on the plant and collapses on the drying rack was never structurally dense - it was holding water. Silica and potassium in the last weeks build the cell wall material that survives drying, so what you cut is closer to what you jar.

How to Use

  • Last 3 weeks of flower: 1 to 2 g per litre, once a week
  • Dissolving: mix into warm water and stir until fully clear before adding to the reservoir
  • Taper: stop with the final flush, about a week before harvest
  • Water only: GreenPlanet dose Dense separately from the feed programme - no base nutrient goes in that watering
  • Media: soil, coco and hydroponics

Technical Specifications

  • Format: Soluble powder
  • Role: Late-flower hardening additive
  • Key inputs: Phosphorus, potassium, silica and magnesium
  • Typical dose: 1 to 2 g per litre
  • Window: Last 3 weeks of flower, with water only
  • Preparation: Dissolve fully in warm water first
Feed Chart
GreenPlanet HortiRawK, formerly Dense · soil and hydroponics · grams of powder, water only
Medium and stage Per 1 L Per 10 L
Soil — once a week in the last 3 weeks of flowering, with water only 1–2 g 10–20 g
Hydroponic — flush the reservoir, then once a week in the last 3 weeks with water only 1–2 g 10–20 g
Note — Used separately from the regular feeding programme — water only, no base nutrient. In hydroponics, run it for 48 hours straight, flush, then replace with fresh nutrient solution. Allow at least one week of flush. This is a mass in grams and has not been converted to a volume. GreenPlanet: “Maintain the nutrient solution pH between 5.8 – 6.3 at all times.” 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.