Aptus Micromix Soil 100g - Beneficial Microlife for Mixing Direct into Growing Medium
Best for: soil growers who want to inoculate their growing medium with beneficial microorganisms at transplanting, rather than dosing through irrigation water.
Our thoughts
This is the dry-mix version, meant to go straight into your soil or planting hole rather than being dissolved and fed through a drip line. If you are hand-watering pots of soil, this is the Micromix you want, not the Drip version. Get it worked into the medium at transplanting and you are giving your roots a head start against the pests and pathogens that sterile substrate leaves them exposed to.
Micromix Soil is one of two Micromix powders from Aptus, the other being Micromix Drip, both built around a mix of beneficial microorganisms and stimulants selected for their specific functions in the root zone. Sterile growing substrates have all microlife destroyed during manufacture, including the beneficial organisms that would otherwise protect roots and support growth, which is exactly the gap Micromix is designed to fill.
Micromix Soil is specifically formulated as a dry powder to be worked directly into the growing medium or planting hole, rather than dissolved in water. This makes it the version suited to soil growers doing a one-off substrate inoculation at transplanting, as opposed to growers dosing beneficial microlife continuously through a drip or fertigation system.
How it compares
Beneficial microbial inoculants are a well established category, usually split between dry substrate additives and liquid or water-dosed products.
- Compared with Aptus's own Micromix Drip, Soil is worked dry into the growing medium at planting, while Drip is dissolved in water and dosed through an irrigation system.
- Against mycorrhizal inoculants like Aptus Mycor Mix or similar root fungi products, Micromix Soil focuses on beneficial bacteria and microorganisms rather than mycorrhizal fungi specifically.
- Compared with dry beneficial bacteria products from brands like Canna or BAC, Micromix Soil follows the same substrate-inoculation logic, applied at transplanting rather than through the water.
It is the right tool for a one-off substrate treatment rather than an ongoing, water-delivered dose.
Usage guidance
Micromix Soil is worked into the medium directly rather than mixed into a water tank.
Mixing through substrate
Mix through the growing medium at 0.5 to 1g per litre of soil or straw.
Planting holes
Alternatively, use 1g in each planting hole before transplanting.
Repeat treatment
Optionally repeat the treatment after 21 days, using Micromix Drip (dissolved in water) rather than more of the Soil powder, to maintain beneficial microlife levels through the growth phase.
Technical specifications
- Format: Dry powder
- Pack size: 100g
- Contains: 100% organic beneficial microorganisms and stimulants
- Delivery method: Mixed directly into growing medium or planting hole
- Dosage: 0.5-1g per litre of soil/straw, or 1g per planting hole
- Repeat treatment: Optional, after 21 days, using Micromix Drip
- Suitable media: Soil and other solid growing substrates
Who this is for
- Soil growers transplanting into fresh substrate who want to inoculate at planting
- Growers hand-watering pots rather than running drip or fertigation systems
- Anyone wanting to protect young plants' root systems from harmful fungi and bacteria from the start
- Growers running Aptus's wider substrate care range alongside their base nutrients
Our take
Micromix Soil does one job cleanly: get beneficial microlife into your growing medium right at the point you need it most, at transplanting. If your setup is pots and hand watering rather than a tank and drippers, this is the version to reach for, not Micromix Drip.
A smart, low-cost addition at transplant time. One we sell a lot of for new growers.
