Diamond Density Flower Hardener
Diamond Density Flower Hardener
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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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One additive, two jobs — trigger flowers early, harden them late
Diamond Density is a flowering stimulant used at two distinct points in the cycle. Run early, in the first week of flower, it triggers a faster and more even switch into bloom. Run again late, in the final couple of weeks before harvest, the same additive hardens up bud structure, adding density and weight to flowers that would otherwise finish looser and lighter.
It works as a foliar and root-zone stimulant rather than a feed — there's no NPK claim behind it, and growers dose it on top of an existing nutrient programme at the two windows where it has the most effect, rather than running it continuously through the whole cycle.
Key Benefits
- Triggers rapid flower onset when used in week one of bloom
- Hardens and densifies buds when used in the final ripening weeks
- Works alongside any existing base nutrient programme
- Suited to soil, coco and recirculating hydroponic systems
- Two-window dosing keeps use targeted rather than constant
How to Use
- Early trigger: 1–2ml per litre with every feed for the first 7 days of flower
- Late hardening: 1–2ml per litre with every feed during weeks 6–7
- In run-to-waste systems, aim for 20–30% runoff on each feed
Technical Specifications
Formula type: Flowering stimulant, no published NPK
Application rate: 1–2ml/L, every feed for 7 days (early), repeated weeks 6–7 (late)
Grow phase: Early flower and late ripening
Compatible systems: Soil, coco, recirculating hydroponics
| Stage | Per 1 L | Per 10 L |
|---|---|---|
| Early trigger, every feed for the first 7 days of flower | 1–2 ml | 10–20 ml |
| Late hardening, every feed in weeks 6 and 7 | 1–2 ml | 10–20 ml |

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.