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.
Seasol 4L Seaweed Health Tonic Concentrate - 4L 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.
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Seasol 4L Seaweed Health Tonic Concentrate is a natural plant health booster designed to improve growth, resilience, and overall plant performance. Safe for all plants including Australian natives, it delivers fast-acting support for roots, foliage, flowering, and soil health.
✔ Stimulates Root Growth - Encourages strong root development and faster plant establishment.
✔ Safe for All Plants - Suitable for vegetables, flowers, trees, shrubs, lawns, and natives.
✔ Enhances Flowering & Fruiting - Supports improved blooms and crop performance.
✔ Boosts Stress Resistance - Helps plants cope with heat, drought, frost, pests, and disease.
✔ Improves Soil Biology - Increases beneficial microbial activity in the soil.
✅ Garden Beds - Improves plant health and soil condition.
✅ Vegetables & Herbs - Supports strong growth and productive harvests.
✅ Trees & Shrubs - Encourages healthy root systems and foliage.
✅ Pots & Planters - Ideal for container-grown plants indoors and outdoors.
Product Type: Seaweed plant health tonic
Volume: 4 litres
Application: Soil and foliar feeding
Plant Safety: Safe for all plants including natives
Action: Fast acting
Origin: Australian made
General Use: Dilute according to label directions and apply to soil or foliage.
Transplanting: Use when planting or repotting to reduce transplant shock.
Seed Germination: Apply to direct sown seeds to improve germination rates.
Frequency: Apply regularly throughout the year for best results.
Is Seasol safe for Australian native plants?
Yes, it is safe to use on all plants including Australian natives.
Is this a fertiliser?
No, it is a plant health tonic that supports growth and resilience rather than providing traditional fertiliser nutrients.
How quickly does Seasol work?
It is fast acting and begins working immediately after application.
Can this help reduce transplant shock?
Yes, it is ideal for reducing transplant shock and helping plants establish quickly.
Can this be used year-round?
Yes, regular use throughout the year helps maintain healthy plants and soil.
Supplied in a 4L bottle and packed securely for safe handling, transport, and storage.
Give your garden a natural boost with Seasol Seaweed Health Tonic Concentrate.
Select size