Winter Clearance On Now - Big Savings on Advanced Trees and Hedging

Healthy Plants, Guaranteed. If your plant doesn’t thrive, we’ll replace it.

Minimum $300 order before delivery - built for safe live plant transport.

Seasol 4L Seaweed Health Tonic Concentrate

$114.95 $229.95

Healthy Plants Guaranteed

Covered by our 30-day healthy plant promise.

Packed for Safe Transit

Prepared carefully so plants arrive ready to plant.

Minimum $300 Order Before Delivery

This helps us group live plants safely, protect them in transit, and keep delivery pricing fair.

$300 product spend minimum

Australia-Wide Plant Delivery

Calculating delivery...

Live plants are packed with care and dispatched as quickly as possible.

Select size

This size is on backorder. Want it the moment it lands back from the farms?

Good to know: pot sizes, availability and delivery
  • Sizes are pot sizes, not plant heights. A 200mm pot is the width of the container. Typical plant heights per size are in the size guide.
  • Every order is availability checked. If anything cannot be supplied as listed, we contact you within 2 business days with the closest equivalent, the option to wait, or a refund. You choose.
  • Delivered Australia wide. Live plants packed for transit, $300 minimum order. Details on the delivery page.

GrowMore Rewards - Save More as Your Order Grows

Add this item to your cart - spend $385.05 more to unlock $25 OFF with code GROW25.

Discount Level Cart Total
$25 OFF $500 or more

Delivery
  • Fast, reliable delivery Australia-wide
  • Orders are prepared at the nearest distribution centre to you
  • Flat-rate delivery from $29.95 for standard items
  • Larger plants and trees are delivered via nursery truck from $149.95

FAQs

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.

Seasol Seaweed Health Tonic Concentrate is a 4 litre bottle of the seaweed tonic most Australian gardeners keep on hand, sized for a garden big enough that a small bottle runs out mid job. It is fast acting, Australian made, and applied either to the soil or over the foliage. It suits all plants, natives included.

What it does

  • Root growth first. The tonic stimulates root development, which is the foundation of everything else a plant does.
  • Holds up under stress. Heat, drought, frost, pests and disease all set a plant back, and regular use improves how quickly it comes back.
  • Flowering and fruiting. Blooms improve and crops perform better once a plant has the root system to support them.
  • Soil biology. Beneficial microbial activity in the soil increases, so the benefit continues after the application has passed.

How to use it

This is a concentrate. Dilute at the rate printed on the label, which varies with the use, and apply to the soil, the foliage, or both. Soil application is the choice when roots are the target, such as after planting. Foliar application suits a plant needing a fast lift, and it begins working immediately.

Use it whenever plants are moved: at planting, at repotting, and when transplanting an established shrub. It can also be watered onto direct sown seed to improve germination rates. Apply regularly through the year, because the effect is cumulative.

What it suits

Larger gardens. Four litres of concentrate is the size to buy when a whole property is treated on a schedule.

Trees and shrubs going in. Advanced stock has the most root disturbance to recover from, and this is worth applying on the day the plant goes in the ground.

Vegetables and herbs. Short season crops have no time to recover from a slow start, so anything that speeds establishment shows up in the harvest.

It is a tonic, not a plant food. There is no nutrient analysis behind it, so it belongs alongside a fertiliser programme rather than in place of one. Delivered Australia wide, with delivery from $29.95 and a minimum order of $300 before delivery.

Related products and reading

Loved by Australian Gardeners

★★★★★ Rated by verified customers across Australia

What Happens After You Order

1

Order confirmed

2

Prepared locally

3

Packed with care

4

Delivered Australia-wide

Covered by our 30-Day Satisfaction Guarantee for complete peace of mind.

A Garden Design Consultation, complete with a garden plan, plant labels, and a tablet showing your space, is ideal for personalised advice or an email-based garden design consultation in your sunny backyard.

Not Sure Where to Start?

Get personalised advice from an experienced garden designer and plan your garden with confidence before you buy.

Garden Design Consultation

Personalised recommendations tailored to your space, climate and goals, delivered by email.

  • Personalised to your garden
  • Australian climate knowledge
  • No phone calls or site visits required
Get Expert Garden Advice

Your dream yard, without the hassle

Skip the nursery trip

Order online and save time.

Delivered Australia-wide to your door

Sourced from the nearest centre and shipped direct.

30-Day Satisfaction Guarantee

Every order backed by our guarantee.

Visit The Resource Center

View all
A bottle of Seasol 4L Seaweed Health Tonic Concentrate rests on soil next to gloves, a trowel, and green plants, an ideal health booster to nurture your garden.
Nursery Near Me

Seasol 4L Seaweed Health Tonic Concentrate

$114.95 $229.95

Seasol Seaweed Health Tonic Concentrate is a 4 litre bottle of the seaweed tonic most Australian gardeners keep on hand, sized for a garden big enough that a small bottle runs out mid job. It is fast acting, Australian made, and applied either to the soil or over the foliage. It suits all plants, natives included.

What it does

How to use it

This is a concentrate. Dilute at the rate printed on the label, which varies with the use, and apply to the soil, the foliage, or both. Soil application is the choice when roots are the target, such as after planting. Foliar application suits a plant needing a fast lift, and it begins working immediately.

Use it whenever plants are moved: at planting, at repotting, and when transplanting an established shrub. It can also be watered onto direct sown seed to improve germination rates. Apply regularly through the year, because the effect is cumulative.

What it suits

Larger gardens. Four litres of concentrate is the size to buy when a whole property is treated on a schedule.

Trees and shrubs going in. Advanced stock has the most root disturbance to recover from, and this is worth applying on the day the plant goes in the ground.

Vegetables and herbs. Short season crops have no time to recover from a slow start, so anything that speeds establishment shows up in the harvest.

It is a tonic, not a plant food. There is no nutrient analysis behind it, so it belongs alongside a fertiliser programme rather than in place of one. Delivered Australia wide, with delivery from $29.95 and a minimum order of $300 before delivery.

Related products and reading

Select size

  • 4L
View product