Handy Calculators For Your Garden!

Don't Want Leftover Potting Mix?

Easily calculate how much potting you you need for the job!

Select Pot Type:

Pot Diameter (cm): Pot Height (cm):

Stop Guessing When You Fertilize Your Garden!

Fine tune your fertilizer bill and only use exactly what you need!

Select Fertilizer: Soil Volume (L): Soil Area (m²):

Build Your Own Fertiliser Mix

Take the guesswork out of blending dry amendments and dial in a nutrient mix that suits your garden. Simply select the amendments you want to use, then adjust the amount of each one until you land on your ideal NPK ratio.

BUILD YOUR BLEND

Your amendments

Add only the amendments you want, then enter the weight of each.

0 selected

Add an amendment

No amendments added yet Choose an amendment above to start your blend.

Batch label optional

How are the results calculated?

N-P-K is a weighted average based on the grams entered for each amendment.

Other nutrients use the quantified analysis in the amendment reference data. Where a nutrient is not quantified for an ingredient, that ingredient contributes no listed amount to that nutrient result.

LIVE BLEND RESULT

0.00-0.00-0.00

Weighted N-P-K by amendment weight

N0.00%

P0.00%

K0.00%

Total weight0 g

Amendments0

97%

(2670)

(58)

(17)

(6)

(11)

2526

102

Super happy

Excellent service and quality products, good as gold!

Thanks Shane! Good as gold, we’ll take that! 😄 Stoked you’re happy with the service and quality mate. Really appreciate the cracking feedback and support! 🌱🙌

using my soil moisture meter

I immediately tested my courtyard pots with my new soil moisture meter. The results were very interesting, such variation. I feel this simple tool will be extremely useful this coming hot summer.

Thanks Pippa! Stoked the moisture meter is already showing its worth! 🌱 It’s amazing how much moisture can vary from pot to pot. Sounds like it’ll be an absolute winner when those hot summer days roll around! ☀️🙌

Super Reservoir

The reservoir was easy to set up and doing well for the intended purpose.

Thanks James! Great to hear the Hydro Tank was a breeze to set up and is working a treat! 💧 Cheers for the feedback mate, really appreciate the support! 🙌

Happy customer

To the greenthumbs only took a week for delivery of goodies happy customer will definitely order more goodies in the futre cheers .

Thanks Paul! Stoked your goodies arrived quickly and you’re a happy customer! 🌱 Really appreciate the support mate, and we’ll be happy to see you back for more goodies! 🙌

Happy with product and customer support :)

Appreciated how easy it was to use the product, as well as having questions answered about products on phone :)

Thanks legend! Stoked you found Root Roids easy to use and got the help you needed over the phone too! 🌱 Really appreciate the lovely feedback and support! 🙌

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Don't Want Leftover Potting Mix?

Easily calculate how much potting you you need for the job!

Stop Guessing When You Fertilize Your Garden!

Fine tune your fertilizer bill and only use exactly what you need!

Your amendments

Let customers speak for us