Which Product, When?

Choosing the right organic input shouldn’t feel like solving a riddle. Our revamped 2025 “Which Product When” guide lines up every Dr Greenthumbs favourite against each growth stage—seed, veg, bloom and beyond—so Aussie growers can hit maximum flavour, yield and resilience without the synthetic guess-work. From balcony pots to full hydro rigs, you’ll know exactly what to reach for and when.

Feed the Base - Complete Fertilisers

  • GreenSpace Liquid delivers a low-odour, all-natural NPK for indoor foliage and courtyard pots—ideal when you need nutrition without the pong. 

  • GreenSpace Slow Release prills keep soil humming for up to three months, making repots a breeze. 

  • Ocean Grown Fish Hydrolysate adds amino-rich, no-smell marine goodness that boosts microbial activity and root vigour; fish hydrolysate is prized for its nitrogen and amino-acid profile.

  • Super Soil Nutrient Kit or the two-part Go & Grow + Bud & Bloom stack lets production gardeners “cook” living soil or top-dress large beds with stage-specific minerals.

Fix, Fortify & Fire Up – Microbial Prescriptions

  • Root Roids floods the rhizosphere with beneficial bacteria and fungi, unlocking bound nutrients and helping plants shrug off drought stress. Studies show mycorrhizal inoculation markedly increases drought tolerance.

  • Fruit Roids supplies enzymes and natural growth hormones that keep the plant’s nutrient “highways” clear right through bloom.

  • High Tea compost-tea kit brews billions of microbes for hassle-free soil cycling; compost teas are celebrated for boosting beneficial biology and suppressing disease.

  • Mycorrhizal Inoculant (granular) fits drip-line delivery and cuts biofilm—perfect when you need a pure endo/ecto blend.

Specialist Mixes & Media