Spring Sale On Now - Big Savings Sitewide

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

No minimum order - buy a single plant or a whole garden, delivered Australia wide.

Plant Doctor Activ8EXTRA High Nitrogen Liquid Lawn Fertiliser

$29.95 $39.95

30-Day Guarantee

Covered by our 30-day satisfaction guarantee.

Packed for Safe Transit

Packed carefully and delivered to your door.

No Minimum Order

Order one item or add it to a plant order.

Order any amount, big or small

Australia-Wide Delivery

Delivered to your door

Dispatch times vary by item. Made-to-order pieces are noted in the description.

Good to know: availability and delivery
  • Delivered to your door. Garden goods and live plants are delivered separately, so items in one order can arrive on different days.
  • 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. No minimum order. Details on the delivery page.
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, no minimum order. Details on the delivery page.

GrowMore Rewards - Save More as Your Order Grows

Add this item to your cart - spend $470.05 more to unlock $25 OFF with code GROW25.

Discount Level Cart Total
$25 OFF $500 or more

Delivery

  • Delivered Australia-wide
  • Delivery is calculated at checkout from your postcode
  • Garden goods and live plants are delivered separately, so they can arrive on different days
  • Dispatch times vary by item, and made-to-order pieces are noted in the description

FAQs

Can I pick up my order?

No. We operate as an online-only nursery and do not offer customer pickups.

Will it arrive with my plants?

Usually not. Garden goods and live plants are delivered separately, so they can arrive on different days.

What if I am not home for delivery?

Your order will be left in a safe location at the delivery address.

What if my item arrives damaged or faulty?

Every order is covered by our 30-Day Satisfaction Guarantee. Send us photos within 30 days and we will arrange a replacement or refund.

Activ8EXTRA is a high-nitrogen liquid fertiliser and soil conditioner enriched with seaweed, fish, blood and bone, and humic and fulvic acids. It delivers fast-acting nitrogen for green growth and, in the same application, the natural compounds that feed soil microbes. It is used on lawns, vegetable patches and leafy trees.

Why you'll love it

  • Fast-acting nitrogen. The liquid form delivers nitrogen quickly when a lawn needs a lift in colour and growth.
  • Feeds the soil as well as the plant. Seaweed, fish and fulvic acid supply the organic compounds that beneficial soil microbes live on.
  • A fertiliser and soil conditioner in one. Humic and fulvic acids are included to improve soil health and nutrient availability.
  • Fits an organic or regenerative program. It is used to rebuild soil biology, improve water absorption and help soil recover after chemical use.

How to use it

Agitate the container well, dilute at no stronger than 1 part in 100 and apply 75 to 100ml per 100 sqm. In a watering can, use 20 to 30ml per 9L. With a pressure or knapsack sprayer, allow about 10L of water per 100 sqm. Apply fortnightly through the warmer months, and less often or at lower strength in the cooler months. A light watering afterwards carries the nutrients to the root zone. Do not mix it with iron-based products, and test a small area first on young, sensitive or native plants.

What's in it

NPK 16-2-5 plus micronutrients, blended with fish hydrolysate, seaweed (Ascophyllum nodosum), blood and bone, humic and fulvic acids and a range of trace elements.

Sizes

  • 1L. The starting size, for a small lawn or a mixed garden.
  • 4L. The mid-size container for regular feeding of a home lawn.
  • 10L. The bulk container for large lawns, acreage and turf work.

Specifications

  • Pack sizes: 1L, 4L, 10L
  • Form: liquid
  • Type: high-nitrogen fertiliser and soil conditioner
  • Analysis: NPK 16-2-5 plus micronutrients
  • Suitable for: lawns, vegetable gardens and trees

Product details

TypeFertilisers
What it isHigh-nitrogen fertiliser and soil conditioner
FormLiquid
Suitable forLawns, vegetable gardens and trees
AnalysisNPK 16-2-5 plus micronutrients
Sizes1L, 4L, 10L

Great for

LawnsGarden BedsVegetables & FruitLiquid

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.

Plant Doctor Activ8EXTRA High Nitrogen Liquid Lawn Fertiliser
Nursery Near Me

Plant Doctor Activ8EXTRA High Nitrogen Liquid Lawn Fertiliser

From $29.95 $39.95

Activ8EXTRA is a high-nitrogen liquid fertiliser and soil conditioner enriched with seaweed, fish, blood and bone, and humic and fulvic acids. It delivers fast-acting nitrogen for green growth and, in the same application, the natural compounds that feed soil microbes. It is used on lawns, vegetable patches and leafy trees.

Why you'll love it

How to use it

Agitate the container well, dilute at no stronger than 1 part in 100 and apply 75 to 100ml per 100 sqm. In a watering can, use 20 to 30ml per 9L. With a pressure or knapsack sprayer, allow about 10L of water per 100 sqm. Apply fortnightly through the warmer months, and less often or at lower strength in the cooler months. A light watering afterwards carries the nutrients to the root zone. Do not mix it with iron-based products, and test a small area first on young, sensitive or native plants.

What's in it

NPK 16-2-5 plus micronutrients, blended with fish hydrolysate, seaweed (Ascophyllum nodosum), blood and bone, humic and fulvic acids and a range of trace elements.

Sizes

Specifications

Size

  • 1L
  • 4L
  • 10L
View product