Apply from September to March
Winter Shield Pro
- Regular price
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£29.99 - Regular price
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- Sale price
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£29.99
Protect your lawn through the colder months with a low-nitrogen, high-iron formulation that hardens grass, improves winter colour and helps keep moss at bay.
✅ Professional-grade fertiliser for home use – our trusted low-nitrogen formula used by professionals to protect lawns over winter
🛡️ Protects against frost & stress – high potassium and iron help harden turf and enhance winter colour without soft growth
🌿 Ideal for moss-prone lawns – high iron content blackens moss and enhances lawn colour during the colder months
🕒 Steady release over 8–12 weeks – apply and leave – no mowing needed, works slowly without forcing unnecessary growth
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Shipping, Returns & Our Guarantee
Same Day Despatch
Order before 3pm (Mon–Fri) for same-day despatch. All orders are shipped using a tracked 2-day service.
Delivery Costs
• Free standard delivery on all orders
• Next day delivery for 50m² bags = £4.99
• Next day deluvery for 100m² and 200m² bags = £7.99
Returns
Changed your mind? No problem — you can return unopened, unused items within 14 days. Just contact us to get started. Return postage is not included.
➡️ View our Returns & Refunds Policy
Green-Up Guarantee
We’re so confident in our fertiliser, we guarantee visible improvement within 14 days when applied as directed. If not, we’ll give you a refund or store credit towards your next purchase. Just send us your order number and before/after photos.
Not sure how big your lawn is? Our handy lawn size calculator takes the guesswork out of the equation. Simply enter your postcode, outline your lawn on the map, and we’ll instantly calculate its size for you.
Once you know your lawn area, you can explore our range of professional lawn care treatments tailored to your lawn’s specific needs.
👉 Get started below and take the first step towards your best lawn yet!
Product Details
How Much Do I Need?
All our fertilisers are designed to be applied at 25g per m² — the perfect rate for professional results without the risk of overfeeding.
You might be used to heavier application rates with DIY products, but our formulas are concentrated, so a little really does go a long way.
To work out how much you need:
- Measure your lawn using our handy Lawn Size Calculator.
- Multiply your lawn’s size (in m²) by 25g
- Choose the pack size that covers your area — if you’re between sizes, round up to ensure full coverage.
Bag coverage guide:
- 50m² bag = 1.25kg
- 100m² bag = 2.5kg
- 200m² bag = 4.7kg
Stick to 25g per m² and you’ll see fast, safe, and visible improvement.
How to Apply?
Follow these simple steps for best results:
Step 1: Mow your lawn (if needed)
For best results, mow your lawn 2-3 days before applying fertiliser. This clears away excess grass, helping the nutrients reach the soil where they're needed most. Avoid mowing immediately before application, especially in very dry conditions, as freshly cut grass can be more prone to stress.
Step 2: Measure the correct amount
Use our Lawn Size Calculator to work out your lawn area. Then weigh out 25g per m² (kitchen scales are useful for this). It might not look like much, but it's the perfect amount for our high-performance fertiliser. Please don’t be tempted to add more — applying too much can over-feed your lawn, leading to potential damage or scorching.
Step 3: Spread evenly
Apply the fertiliser evenly across your lawn using a handheld or push spreader. Walk at a steady pace in straight lines to ensure consistent coverage. Need a spreader? Shop our handheld spreaders.
Step 5: Wait before mowing again
Hold off mowing for at least 3 days after application and watering to allow the fertiliser time to fully absorb into the soil. This gives the nutrients the best chance to take effect.
Step 6: Children & pets
Once watered in and the lawn is fully dry, it’s safe for children and pets to walk on. Please Note: This product contains iron, which can stain hard surfaces, so we recommend minimising foot traffic for 24–48 hours. Check shoes before crossing patios or indoor floors, and brush or rinse away any granules from paving. See our Child & Pet Safety Guide for full advice.
For more detail, see our How to Apply Fertiliser Guide, or check your inbox after purchase for a step-by-step email with full instructions and video support.
Ingredients and How They Help My Lawn
Every lawn feed we create is designed with purpose — to give your grass exactly what it needs, when it needs it. Each blend in our range uses a carefully balanced mix of nutrients to boost colour, strengthen roots, build resilience and improve overall lawn health.
Our seasonal fertilisers are also formulated to work in harmony across the year — each one building on the last. When used together, they deliver the perfect balance of nutrition to keep your lawn looking its best in every season.