Dr Greenthumbs TurboDirt Water Only Super Soil (27L / 70L Bags)

TurboDirt is fully amended, living soil. For most grows (9–10 weeks), you only need to add water. No bottled nutrients are required.

• If you want extra growth, you can follow the optional feeding chart with our “Roids” amendments.
  
• Weeks 1–4 are veg, and weeks 5–8 are bloom. The chart shows when to top-dress boosters like Root Roids and Fruit Roids.
  
• If you prefer to keep it simple, you can skip amendments and just water.

A 27 L bag fills one 20 L (5-gallon) fabric pot, with a little left over. A 70 L bag will fill about three of the same pots.

No. TurboDirt is nutrient-dense and supports growth for around 9–10 weeks without additional feeding. If you’re using another living soil kit that suggests adding nutrients after 6 weeks, that means the soil is good on its own for the first part of the cycle. Only feed earlier if you notice hungry plants or nutrient leaching from heavy watering.

This can happen if the the plant becomes root bound & soil nutrients are running low. Two solutions:

• Add a mid-bloom top-dress around week 3 of flower so nutrition kicks in before week 5.
• Use a larger pot with more TurboDirt so your plants have enough food to finish strong.

Yes. To recharge soil, mix in fresh dry amendments (¼ to ½ cup per 30 L of soil), then let it sit for 2–3 weeks before replanting. Or, if you prefer no-till, just top-dress with amendment kits during and between grows. Our Grow Guide has a detailed chart for re-use.

You can, but most customers find it easier and cheaper to use TurboDirt, especially for small indoor grows. It’s essentially the same balanced recipe we’d recommend, already blended and composted. For large garden beds, mixing your own might be worthwhile, but TurboDirt saves time and guarantees consistency.

Yes.

• Avoid overwatering. Keep soil moist, not soggy.
• Use fabric pots for better airflow.
• If you're new, follow the Grow Guide and optional feed chart for a step-by-step plan.

Most of the time, no. A pH of around 6.3–7.0 works fine. TurboDirt naturally buffers water into the mid-6 range. Nine out of ten customers can use tap or rainwater without adjustment.

TurboDirt will buffer it somewhat, but long-term, you should lower the pH. A small amount of phosphoric acid works well. Aim to bring the water into the 6–7 range.

Probably not. pH test strip kits can give skewed results, especially if organic additives are in the soil. If your plants look healthy, don’t over-correct. Watch your plants first, and only adjust if you see ongoing issues.

• Living Soil (Coots mix) is heavier and contains much less peatmoss, and more organic matter. You usually need to start feeding around week 2-4.
• TurboDirt is peat-based, pre-loaded with nutrients for about 9–10 weeks, and easier to use once you learn to water the soil correctly.
• TurboDirt is much more popular for small indoor setups because it’s convenient and forgiving.
• Both can be reused with amendments, but Living Soil is better for larger beds and growers who like hands-on feeding, while TurboDirt is best if you want a ready-to-go mix.

Yes. TurboDirt is available in 27 L, 70 L, and bulk volumes of 240 L and 480 L. These larger sizes are listed on our website and are ideal if you need to fill multiple pots or run a bigger setup.

Yes. If freight costs look high at checkout, contact us and we’ll see what we can do. We’ve offered customers free shipping or special discounted checkout links on large direct orders before. We also recommend considering soil re-use with our amendment kits as a way to save money over time.

Add TurboDirt to your cart, enter your address at checkout, and the system will calculate the freight cost automatically. If you’re planning a large order, get in touch and we’ll prepare a tailored freight quote for you. Quotes for bulk orders are usually valid for 7 days.

No. The Value Pack is a preset bundle and must ship as-is. However, we do offer some packs with free shipping, which can reduce costs in those situations.

No. The included 25 L fabric pots cannot be swapped for other sizes. All packs are pre-set and we are not able to change the contents.

You can return unopened products for a refund. Contact us with your order number, name, and details so we can provide the return address.

Sometimes multiple parcels in one order get separated in transit. Usually, the missing box is still on the way and will arrive within a couple of days. If a parcel is confirmed lost or damaged, we’ll replace it at no cost to you. Please contact us with your order details so we can track the shipment.