
High nutrient, registered organic fertiliser which delivers brilliant results! Contains only fish and kelp, NPK: 2.5 : 1 : 0.5
For pots & gardens
Flower & foliage booster
Organic Certified
Searles SeaMax Organic Fertiliser is a Certified 100% organic fertiliser, suitable for all plants including vegetables, fruits, flowering plants, indoor plants, ferns, orchids, roses, lawns etc. SeaMax Organic Fertiliser boosts plant and root growth, improve soil health and increases fruit and flower and is endorsed by The QLD Rose Society.
Searles has refined and improved SeaMax Organic Fertiliser liquid formula to make application easier with less odour, while still providing outstanding results for stronger, robust plant growth. A high grade, all natural, fertiliser in easy to use liquid form. Delivers remarkable benefits for the best health & vigour your plants can achieve!
- NPK: 2.5 : 1 : 0.5
- Contains 100% pure organic fish & kelp.
- Rich in beneficial ocean fish oils.- Is cold processed to retain all the nutritional value found in fish and kelp.
- Contains 60+ naturally occurring elements including vitamins, minerals, alginates, plant growth hormones, amino acids, gibberellins, cytokinins, auxins, phenolic compounds and proteins, promoting healthy growth.
- BFA Certified fully organic to recognised worldwide organic standards.
- Encourages strong seedling establishment.
- Reduces stress at transplanting.
- Increased and improved flowering and fruiting.
- Extended flowering of ornamentals.
- Decreased plant stress/increased resistance to drought & frost.
- Reduced chemical usage.
- More efficient use of applied minerals.
- Better taste and longer shelf life of fruit and vegetables.
- Improved sugar levels, earlier maturity and increased yields.
- No artificial fertilisers or growth stimulants added.
- Improved stock health and production.
- Concentrated formula
- 1lt makes up to 450L of ready to use fertiliser. 5lt makes up to 1000L of ready to use fertiliser
- Endorsed by The QLD Rose Society
Available sizes:
High nutrient, registered organic fertiliser which delivers brilliant results! Contains only fish and kelp, NPK: 2.5 : 1 : 0.5
Looking for premium Australian-Made garden care products? Just ask your Local Garden Centre for Searles.


For generations, Searles has been the go-to choice for gardeners across Australia, providing exceptional garden care products that cater to both seasoned horticulturists and enthusiastic beginners. Established in 1977, Searles is renowned for its commitment to quality, helping you cultivate a thriving garden with ease.
With Searles, you can effortlessly nurture a flourishing garden, transforming your outdoor space into a vibrant oasis that reflects your personal touch.
We don’t sell plants. Please ask your friendly local gardening outlet for suitable plants to suit your garden solution and climate.
Look for your nearest stockist via this link. If your nearest gardening outlet doesn’t stock a particular product you are sourcing, ask the staff to order the product in for you.
Local garden centres are full of expert horticulturalist to help you with your gardening solutions. You can pop down to your local gardening outlet with the plant/disease sample or a picture of it and ask the expert what products/advise they have to answer your question. Alternatively, you can contact us through the Contact us form. Please include detailed information and picture, if required, about your enquiry. Please do not phone in as identification cannot be achieved over the phone. Alternatively, look through our pests and disease library online to find a Searles solution.
Sprout new ideas with our gardening tips, projects and inspiration delivered straight to your inbox.
Join Now
Get social with other green thumbs.
Gardening tips, projects and inspiration to your inbox.
This website and its contents are the copyright of JC & AT Searle Pty Ltd © 2025 - All rights reserved
Site Designed and Developed by April Ford