Healthy Plants, Guaranteed – If your plant doesn’t thrive, we’ll replace it.
Healthy Plants, Guaranteed
If your plant doesn’t thrive, we’ll replace it.
Packed for Plant Health
Carefully prepared to arrive healthy and ready to plant.
Australia-Wide Delivery
Delivered directly from our nursery network.
Real Nursery Stock
Grown by professional Australian nurseries.
Neutrog 15kg Seamungus Garden Fertiliser - 15kg is backordered and will ship as soon as it is back in stock.
Unlock More Discounts - More Plants, More Savings!
Get up to $100 OFF on your order .
| Discount Level | Cart Total |
|---|---|
| $10 OFF | $200 - $999 |
| $50 OFF | $1000 - $2999 |
| $100 OFF | $3000 or more |
Can I pick up my order?
No. We operate as an online-only nursery and do not offer customer pickups.
Can I delay delivery?
Yes. Add your preferred delivery timing in the order notes at checkout.
What if I’m not home for delivery?
Your order will be left in a safe location at the delivery address.
What if my plants don’t arrive healthy?
Every order is covered by our 30-Day Satisfaction Guarantee.
Covered by our 30-Day Satisfaction Guarantee for complete peace of mind.
Get personalised advice from an experienced garden designer and plan your garden with confidence before you buy.
Personalised recommendations tailored to your space, climate and goals, delivered by email.
Order online and save time.
Sourced from the nearest centre and shipped direct.
Every order backed by our guarantee.
Suitable Plants for Shady Areas: Your Complete Australian Guide Shady gardens can be some of the most beautiful and tranquil spaces — if you choose the right plants. Whether...
Read More
Summer Garden Maintenance Tips: Keep Your Australian Garden Thriving Australian summers can be harsh — with intense sun, heatwaves, and unpredictable rain. Whether you're a beginner or a seasoned gardener,...
Read More
How to Grow the Perfect Hedge A well-grown hedge is one of the most valuable features in any garden. Whether you want privacy, noise reduction, wind protection, or simply...
Read More
Neutrog 15kg Seamungus Garden Fertiliser is a powerful soil and plant conditioner designed to revitalise stressed plants and improve soil health year-round. Made by composting seaweed, fish, humic acid, and manure, it delivers a rich blend of natural goodness to support stronger, healthier growth.
✔ Soil and Plant Conditioner - Improves soil structure while supporting overall plant health.
✔ Year-Round Health Tonic - Ideal as a winter fertiliser and ongoing garden booster.
✔ Revitalises Stressed Plants - Helps plants recover from heat, drought, transplanting, and poor soil conditions.
✔ Naturally Rich Formula - Compost-based blend of seaweed, fish, humic acid, and manure.
✔ Improves Soil Biology - Encourages beneficial soil microbes and nutrient availability.
✅ Garden Beds - Improves soil condition and plant performance.
✅ Vegetables & Herbs - Supports healthy, productive growth.
✅ Trees & Shrubs - Strengthens root zones and long-term soil fertility.
✅ Lawns & Landscapes - Revitalises tired or nutrient-poor soils.
Product Type: Soil and plant conditioner
Weight: 15 kg
Primary Ingredients: Seaweed, fish, humic acid, manure
Application: Granular
Seasonal Use: Suitable year-round, including winter
Application: Spread evenly over soil surface.
Watering: Water in well after application.
New Plantings: Incorporate into soil before planting.
Maintenance: Reapply as needed to maintain soil and plant health.
What does Seamungus do?
It conditions soil, improves plant health, and helps revitalise stressed plants.
Can this be used year-round?
Yes, it is suitable for use throughout the year, including winter.
Is this a fertiliser or soil conditioner?
It acts as both a soil and plant conditioner with broad nutritional benefits.
What plants can this be used on?
It is suitable for vegetables, flowers, trees, shrubs, lawns, and general garden use.
Does this improve soil health?
Yes, it improves soil biology, structure, and nutrient availability.
Supplied in a 15kg bag and packed for easy handling, transport, and storage.
Restore soil health and support stronger plants with Neutrog Seamungus Garden Fertiliser.
Select size