Last updated at 23/06/2026 10:34:38
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on bunnings.com.au
Addition of Carbon from natural sources may reduce the need for increased fertilizer use that remains in the soil for ongoing plant productivity
originally posted on bunnings.com.au
Love this product, I’mInto building healthy soils and looking for something other than feeding my plants chemicals like a drug addict.
originally posted on bunnings.com.au
My plants seem to have enjoyed the addition of the Biochar. They are looking happier with the soil improvement. I added a touch to my veggie gardens too and the growth seems to have been well enhanced. Great product and would recommend to help garden soil improvement.
| Total Weight | 3.5kg |
| Organic (Yes/No) | Yes |
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seasol 3.5l Biochar Soil Conditioner
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Addition of Carbon from natural sources may reduce the need for increased fertilizer use that remains in the soil for ongoing plant productivity
Love this product, I’mInto building healthy soils and looking for something other than feeding my plants chemicals like a drug addict.
My plants seem to have enjoyed the addition of the Biochar. They are looking happier with the soil improvement. I added a touch to my veggie gardens too and the growth seems to have been well enhanced. Great product and would recommend to help garden soil improvement.
I started using it on my indoor pot plants, and have since been rewarded by incredible root growth. This combo of minerals, seaweed and charcoal is great. Much more affordable than some hipster brand advertising on Instagram.
| Total Weight | 3.5kg |
| Organic (Yes/No) | Yes |
Seasol 3.5L Biochar Soil Conditioner
Seasol Biochar with Zeolite improves the soil structure and nutrient uptake for healthy soil and even healthier plants by combining four key natural extracts: Bio charcoal, Zeolite, Paramagnetic Rock and Seasol. Biochar is a stable, carbon-rich form of charcoal that is applied to the soil. Biochar helps increase soil fertility and improves overall plant health and productivity by improving the soil structure and soil nutrient and water holding capacity. It also helps to increase an abundance of mycorrhizal and other fungi to assist nutrient uptake. Zeolite is an mineral additive that attracts and retains nutrients, releasing them when the plant needs it, preventing soil nutrient leaching. Suitable for virtually all plants, it helps to build healthier plants, trees and lawn. It also provides a great balance of nutrients for optimal plant health, providing stead flower over time as it decomposes. Paramagnetic Rock, a major component of Biochar, is the addition of rock minerals. Trace elements and minerals are found within the rock such as potassium, phosphorus, sulphur, magnesium among others. Not only do these minerals help the plants themselves, but also foster their symbiotic relationship with essential soil microbes. Rock minerals also provide a greater balance of nutrients for optimal health and vitality. Over time, they continue to deliver a steady flow of nutrients. Seasol the seaweed solution, aids plant establishment and strong root development. The complete garden health treatment helps promote healthy growth and enhances flowering and fruiting. It also stimulates beneficial soil microbes and increases resistance to heat, drought, frost, pests and diseases. It can be applied regularly throughout the year and it's safe on all plants, including natives. Seasol is proudly Australian made.
Seasol Biochar with Zeolite improves the soil structure and nutrient uptake for healthy soil and even healthier plants by combining four key natural extracts: Bio charcoal, Zeolite, Paramagnetic Rock and Seasol. Biochar is a stable, carbon-rich form of charcoal that is applied to the soil. Biochar helps increase soil fertility and improves overall plant health and productivity by improving the soil structure and soil nutrient and water holding capacity. It also helps to increase an abundance of mycorrhizal and other fungi to assist nutrient uptake. Zeolite is an mineral additive that attracts and retains nutrients, releasing them when the plant needs it, preventing soil nutrient leaching. Suitable for virtually all plants, it helps to build healthier plants, trees and lawn. It also provides a great balance of nutrients for optimal plant health, providing stead flower over time as it decomposes. Paramagnetic Rock, a major component of Biochar, is the addition of rock minerals. Trace elements and minerals are found within the rock such as potassium, phosphorus, sulphur, magnesium among others. Not only do these minerals help the plants themselves, but also foster their symbiotic relationship with essential soil microbes. Rock minerals also provide a greater balance of nutrients for optimal health and vitality. Over time, they continue to deliver a steady flow of nutrients. Seasol the seaweed solution, aids plant establishment and strong root development. The complete garden health treatment helps promote healthy growth and enhances flowering and fruiting. It also stimulates beneficial soil microbes and increases resistance to heat, drought, frost, pests and diseases. It can be applied regularly throughout the year and it's safe on all plants, including natives. Seasol is proudly Australian made.
Seasol Biochar with Zeolite improves the soil structure and nutrient uptake for healthy soil and even healthier plants by combining four key natural extracts: Bio charcoal, Zeolite, Paramagnetic Rock and Seasol. Biochar is a stable, carbon-rich form of charcoal that is applied to the soil. Biochar helps increase soil fertility and improves overall plant health and productivity by improving the soil structure and soil nutrient and water holding capacity. It also helps to increase an abundance of mycorrhizal and other fungi to assist nutrient uptake. Zeolite is an mineral additive that attracts and retains nutrients, releasing them when the plant needs it, preventing soil nutrient leaching. Suitable for virtually all plants, it helps to build healthier plants, trees and lawn. It also provides a great balance of nutrients for optimal plant health, providing stead flower over time as it decomposes. Paramagnetic Rock, a major component of Biochar, is the addition of rock minerals. Trace elements and minerals are found within the rock such as potassium, phosphorus, sulphur, magnesium among others. Not only do these minerals help the plants themselves, but also foster their symbiotic relationship with essential soil microbes. Rock minerals also provide a greater balance of nutrients for optimal health and vitality. Over time, they continue to deliver a steady flow of nutrients. Seasol the seaweed solution, aids plant establishment and strong root development. The complete garden health treatment helps promote healthy growth and enhances flowering and fruiting. It also stimulates beneficial soil microbes and increases resistance to heat, drought, frost, pests and diseases. It can be applied regularly throughout the year and it's safe on all plants, including natives. Seasol is proudly Australian made.
Seasol Biochar with Zeolite improves the soil structure and nutrient uptake for healthy soil and even healthier plants by combining four key natural extracts: Bio charcoal, Zeolite, Paramagnetic Rock and Seasol. Biochar is a stable, carbon-rich form of charcoal that is applied to the soil. Biochar helps increase soil fertility and improves overall plant health and productivity by improving the soil structure and soil nutrient and water holding capacity. It also helps to increase an abundance of mycorrhizal and other fungi to assist nutrient uptake. Zeolite is an mineral additive that attracts and retains nutrients, releasing them when the plant needs it, preventing soil nutrient leaching. Suitable for virtually all plants, it helps to build healthier plants, trees and lawn. It also provides a great balance of nutrients for optimal plant health, providing stead flower over time as it decomposes. Paramagnetic Rock, a major component of Biochar, is the addition of rock minerals. Trace elements and minerals are found within the rock such as potassium, phosphorus, sulphur, magnesium among others. Not only do these minerals help the plants themselves, but also foster their symbiotic relationship with essential soil microbes. Rock minerals also provide a greater balance of nutrients for optimal health and vitality. Over time, they continue to deliver a steady flow of nutrients. Seasol the seaweed solution, aids plant establishment and strong root development. The complete garden health treatment helps promote healthy growth and enhances flowering and fruiting. It also stimulates beneficial soil microbes and increases resistance to heat, drought, frost, pests and diseases. It can be applied regularly throughout the year and it's safe on all plants, including natives. Seasol is proudly Australian made.
in 3 offers
The lowest price for Seasol 3.5L Biochar Soil Conditioner right now is $39.80 at eBay.com.au.
The all-time low was $25.65 on 31 July 2025 — today's price is 55% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 23 June 2026.
