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Soil Ninja

Semi-Hydro Mix [Coarse & Fine]

Semi-Hydro Mix [Coarse & Fine]

Regular price £4.75 GBP
Regular price £4.75 GBP Sale price £4.75 GBP
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About Soil.Ninja Semi-Hydro:
A revolutionary & exciting way of growing plants at home! Our semi-hydro blend supplies porous materials & detoxifying / safeguarding amendments, all to keep your propagation & plants healthy, strong & happy. As with all semi-hydro growing, we recommend regular flushing of the pot to remove any built up fertiliser & sediments: ensuring the best free flowing & working behaviour of these very special aggregates.

Soil.Ninja Fine Semi-Hydro comes in 2mm-5mm.
Soil.Ninja Coarse Semi-Hydro comes in 4mm-10mm.

Please Note: 30L mixes are packaged and sent in large white sacks.

Semi Hydro Benefits:
• Extremely fast root growth
• Very fast water and nutrient uptake
• Makes extremely fussy plants far easier to maintain
• Does not require regular watering (due to the reservoir)

How To Use Semi-Hydro:
So where do you start? Semi-Hydro is a completely different way of looking after your plants so if it’s your first time using our Semi-Hydro Mix, don’t forget to check out our Complete Guide before you start. If you get stuck or need any help remember we’re here to help so drop us a message anytime.

Recommended for:

  • Anthurium
  • Monstera
  • Pothos
  • Strelitzia
  • Philodendron
  • Many more fine rooted tropical houseplants

Semi-Hydro mediums may also be known as: Hydroponics, Pon, Semi Hydroponics

Learn More:
Semi-Hydro - The Soil.Ninja Complete Guide
How To Pot Your Plants Into Soil.Ninja Semi-Hydro

Useful Tools:
Soil.Ninja Houseplant Index
Soil.Ninja Soil Calculator


How much Semi-Hydro should you use?
Use the sliders below to match the measurements of your self-watering vessel and it will tell you how much you need!


Soil Ninja Houseplant IndexTake a look at our very useful House Plant Index Here

  • 5 stars: 68 (99%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (1%)
  • 1 star: 0 (0%)
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Katie Ormston

Brilliant! Moved a little homegrown alocasia frydek into semi-hydro, i’ve previously never been able to keep them alive for long in soil and this one is thriving in its new home with slow release fertiliser. Super!

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Isabel Cannon

Great quality and large amount for the price! Think I need to upgrade all my plants to this mix!

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Anonymous

my favourite semi hydro blend have ordered multiple times now. made in the slow release fertiliser 10/10

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Claire Jones

Ordered from Soil Ninja because Lechuza use Evri (might as well not bother sending it...). Dispatched promptly and well packaged, arrived with lovely trackable DPD. Great value and plants love it. Will be sticking to Soil Ninja from now on.

Used the coarse grit for my bigger alocasias and have the fine grit for the babies!

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Mrs M A Lowe

Delighted with everything I received

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Lorraine Nibbs

The best around, quickest delivery too

A
Amanda R Dale

Fabulous

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Rachel

My plants have all taken to it very well

A
Anthony Feeney

Love the stuff, fantastic product. My plants love it

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Keith Kichenbrand

So far, so good! Time will tell if the plants are satisfied with this move :)

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Irene Wallace

I love semihydro. All my plants are in this substrate. The fine is great for delicate root systems and the coarse is great for chunky roots. I also love your packaging and would recommend anyone to try your products.

G
Gill Pugh

Very pleased with this mix. I have only recently starting using it but had some good results already. I was excited but nervous to have a go at semi hydro but glad I did!

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Net

Just Started to use the semi hydro I’m very excited to see how my plants do in it. So far they seem to be okay!

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Sylvia Wright

Great product….And service…highly recommended

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Diane Mitchell

I loved the mix so much I have ordered 20ltrs more

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Anonymous

Arrived very quickly. Lots of information on the packages. Hope the plants like it!

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Monika Zientek

Well, what can I say… great price, great quality, and fantastic customer service. It’s my go-to substrate for my hydroponic plants. I love Soil Ninja and basically own all the components already… now I just need more space in the house 😂

A
Anonymous

Good products and great service. I have been buying from these guys for years.

K
Kirsty Woods

Great stuff only been using for few weeks but already a lot of my plants are looking healthier

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Anonymous

Love it.

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Anonymous

Swift and easy delivery thanks

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Beverley L

They asked me to write a review on, what, after all, is a bag of small stones... semi-hydro mix. Of course, it is more than that, but in terms of reviewing it what more is there to say about it? This is my first time trying my plants in 'pon'/semi-hydro, and I've only repotted one plant so far in it, which was a few days ago. But based on that, I think I prefer working with proper soil substrates rather than stones. But now I've put this one plant, Philodendron Florida Green, in semi-hydro mix, I don't want to double shock the poor thing by switching back to soil:(three stems with a leaf on each, snapped off at the base in the repotting process (when washing the soil off the roots),and there were only seven leaves to start with.) So I'm leaving it to recover, just watering as necessary, and monitoring it closely. I do feel, personally, that plant care is more of a science than a pleasure, switching to semi-hydro. There is so much more to have to consider, like testing PH water levels, specific fertilisers, clear pots for observation, algae growth (replacing fungus gnats, which can only be a blessing, I guess.) Soil Ninja has information on all this, which tells you on the packaging, with a link to their website pages. I have a lot of confidence in this company from my own experience and my trusted planty You Tube content creators, and I'm hoping my Florida Green survives and thrives in semi-hydro, too.

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Justyna Slater

Great mixed as always. My plants love it.

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Justyna Slater

great stuff, my plants love it

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Paul

Same high quality product, packaging , and speedy delivery.

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Julie

Lovely mix and my plants are thriving

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Julie

Perfect for my plants with delicate roots

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M.L.

Great

D
D.H.

Product as advertised. Always good service and product

E
E.C.

Amazing

A
A.G.

Plabts are happier as a result of this product

D
D.E.

Great product

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Not sure which blend to choose?

Then check out our Houseplant Index! We've done all the hard work for you, simply search your plant's name and the guide will tell you it's preferred mix.

See Our Soil Index

  • 100% Peat Free

    All of our mixes are fully peat free, 100% freshly made to order and packed with beneficial microfauna. The natural stuff your plants love and need for healthy growth and nutrition.

  • Trusted By Enthusiasts Everywhere

    Our products are trusted by houseplant enthusiasts of all experience levels and it's because of that, our soil is used internationally. Still unsure? Check out our reviews on Google!