The Greenkeeper’s Secret Formula - iGrow Carpet
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The Greenkeeper’s Secret Formula (Green Shot Iron & Seaweed)

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£42.99
£47.98
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Unlock the greenkeeper’s winter secret – Bundle & save 10%

Why It Works

  • ✓Get a a darker lawn within days
  • ✓Top up your colour year round
  • ✓Perfect for cooler months
  • ✓Safe for kids and pets when used as directed

Bundle Contents:

  • ✓1x Bottle of Seaweed Lawn Booster 8% (1L) (250-500m²)
  • ✓1x 2kg Bag of Green Shot Iron (Covers 500-2000m²)
Quantity:
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Product Overview

What’s Inside?

iGrow Carpet Lawn Seaweed Booster 8% (1Litre)
  • Seaweed for strong roots and resilient grass
  • Boosts soil health and helps your lawn handle winter stress
  • Safe for children and pets
  • Used by professionals for year-round plant vitality
iGrow Carpet Green Shot Iron (2kg Bag)
  • Deepens green colour, even in the colder months
  •  Use any time of year
  • Fast-acting damp-grade formula
  • Safe for children and pets when used as directed
Why Choose The Greenkeeper’s Secret Formula?
  • Unlock the secret to winter lawn care used by pros: This combo keeps your lawn healthy, green, and moss-free, even as temperatures drop.
  • Seaweed provides steady nourishment and stress resistance, while Iron gives you that instant, rich green and tackles moss.
  • Perfect for winter feeding, renovation prep, or any time your lawn needs a boost. (Can be used all year round!)
  • Save 10% when you bundle—exclusive offer! WARNING: WILL STAIN DRIVEWAYS, PATIOS AND OTHER HARD SURFACES
Order The Greenkeeper’s Secret Formula now and see the professional difference.

Technical Specifications

Total Weight
2.5kg + 1kg
Coverage
See Products
Application Time
Year Round
Reapplication
See Products

Green Shot Iron

For greening up:

  1. Check our lawn measurement tool for the correct rate
  2. Remove the filter from your sprayer to prevent blockages
  3. Mix your measured amount in a minimum of 10 litres of water per 100m² and apply evenly using a garden sprayer
  4. Avoid spraying on hard surfaces as it will stain
  5. Water in within 48 hours if no rain is forecast

To dehydrate moss

  1. Check our lawn measurement tool for the correct rate
  2. Remove the filter from your sprayer to prevent blockages
  3. Mix your measured amount in a minimum of 10 litres of water per 100m² and apply evenly using a garden sprayer
  4. Avoid spraying on hard surfaces as it will stain
  5. Apply 7 to 14 days before your lawn renovation to weaken moss and make it easier to rake out, or alternatively after the renovation to dehydrate the moss

Seaweed Lawn Booster

Standard application:

  1. A 1 litre bottle treats up to 500m² at the standard rate — use our lawn measurement tool to calculate how much you need
  2. Mix 200ml per 100m² diluted in 3 to 5 litres of water per 100m²
  3. Apply evenly using a garden sprayer for best results — a watering can can also be used
  4. Do not mow for 24 hours after application
  5. Keep pets off the lawn during application and until dry
  6. Avoid applying during extreme heat, drought or frost

After stress such as drought:

  1. A 1 litre bottle treats up to 250m² at the higher rate — wait until the lawn has recovered and is no longer under stress before applying
  2. Mix 400ml per 100m² diluted in 3 to 5 litres of water per 100m²
  3. Apply evenly using a garden sprayer for best results — a watering can can also be used
  4. Do not mow for 24 hours after application
  5. Keep pets off the lawn during application and until dry

Green Shot Iron

Q: How quickly will I see results?

You'll see the lawn greening within 2 to 5 days and moss blackening within days of application.

Q: Will it stain my patio or driveway?

Yes as iron will stain hard surfaces. Avoid overspray and rinse any splashes immediately.

Q: Can I use it year round?

Yes, it works in any season.

Q: How long does it last?

2 to 7 weeks depending on the time of year and how much growth there is. In winter it will last longer due to slower growth.

Q: Is it safe for kids and pets?

Yes, once watered in and dry. Grazing pets like rabbits and guinea pigs should be kept off for two weeks or three cuts, whichever comes first.

Seaweed Lawn Booster

Q: How much do I need?

A 1 litre bottle treats 250 to 500m² depending on the application rate. For regular maintenance and healthy lawns, the lower rate covers up to 500m². For stressed, patchy or nutrient deficient lawns the higher rate covers 250m². Use the higher rate if your lawn is recovering from drought, heavy use or poor soil conditions.

Q: How often should I apply it?

Once a month year round alongside your granular fertiliser programme.

Q: How do I apply it?

Dilute and apply with a garden sprayer or watering can.

Q: Will I see an instant result like the iron?

Not in the same way as seaweed works beneath the surface improving soil health and root strength, so the results build over time and make everything else you apply work better.

Q: Is it safe for kids and pets?

Yes, it's a natural product and safe once applied.