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Plant Runner Indoor Plant Food 100ml Bottle - Liquid Fertiliser
Plant Runner Indoor Plant Food - 100ml Bottle of Liquid Fertiliser
Bottle of Plant Runner indoor plant food on a light green background
Bottle of Plant Runner indoor plant food on a beige background
Bottle of Plant Runner indoor plant food on a pink background

Indoor Plant Food 100ml

$14.00

The one thing most indoor plants are quietly missing.

  • What it is: a complete liquid feed — 12.2% nitrogen, 11.9% potassium, trace elements and seaweed extract
  • What it does: replaces the nutrients a pot runs out of, in a form roots can take up straight away
  • Best used: on almost everything indoors — monstera, pothos, peace lily, ferns, palms
  • How to use: 1ml per litre in your watering can, every second watering while plants are growing
  • How far it goes: 100ml makes up to 100L — well over a year for most collections

Outdoors, plants send roots through the soil to find what they need. Indoors, they're stuck in a pot with whatever you give them — and once the nutrients in the mix are used up, there's nowhere else to go. Indoor Plant Food is how you keep giving them what they'd otherwise go looking for.

Feed is step four. Light, water and mix come first — that's the Plant Runner Method, in that order. Get those three right, and this is what turns surviving into new leaves.

More than the three letters on the front of most bottles. It's a complete liquid feed, with 12.2% nitrogen, 11.9% potassium, a full set of trace elements and New Zealand seaweed extract. The traces are chelated to stay available, which matters more than it sounds. Hard tap water is where some trace elements in ordinary feeds can quietly become unavailable.

Suits almost everything indoors: monstera, pothos, philodendron, peace lily, fiddle leaf fig, rubber plant, ZZ, ferns and palms.

Built around the way you already water. Feed every second watering while your plants are growing, so there's no schedule to remember. Through the cooler months you don't stop — just ease back to a lighter feed once a month. It's a forgiving rate: 1ml per litre, measured with the marked dropper, or half-strength for anything sensitive.

No fish in it. Vegan-friendly and almost completely odourless — nothing hanging around the lounge room for two days afterwards. 100ml of concentrate in a glass bottle makes up to 100L of feed, which for most collections is well over a year.

For the rest of the setup, pair it with Neem Oil Leaf Shine to keep leaves clean and making the most of their light, and Indoor Potting Mix when it's time to repot.

Made in Melbourne, formulated by horticulturalists (a.k.a. our nerdy selves).

Shake before use.

How much. 1ml per litre of water. A standard watering can holds around 5L, so that's 5ml. If you've only got a couple of plants and you water from a jug, 1ml in a litre is the same thing — the dropper is marked, so you're not estimating either way.

When. While your plants are actively growing — spring and summer for most — feed every second watering. Tying it to watering rather than the calendar does the thinking for you: a plant drinking fast in a bright spot gets fed more often than a slow one in a dim corner, which is exactly how it should work.

Cooler months. Growth slows, and the need to feed slows with it. Ease back to a half-strength feed roughly once a month.

Sensitive plants. Feed at half strength — 0.5ml per litre.

Freshly repotted plants. New mix comes with nutrients of its own. Hold off for the first few weeks, then start feeding normally.

As a foliar feed. Dilute and apply with a mister for a light top-up through the leaves. We use low-biuret urea — the grade made for foliar feeding — so it won't scorch the way ordinary feeds can. Still worth avoiding direct sun, and delicate, hairy or freshly unfurled leaves.

Made up too much? Diluted feed keeps about 48 hours. After that, tip it out and mix fresh.

Missed a feed? No harm done. Pick it back up at the next watering — plants don't hold grudges.

Storage. Out of direct sunlight.

Volume: 100ml concentrate — makes up to 100L of feed

Bottle: Glass

Vegan-friendly

Made in Melbourne

Typical analysis (% w/v)

Nitrogen (N)12.2

Phosphorus (P)1.9

Potassium (K)11.9

Calcium (Ca)0.0144

Magnesium (Mg)0.0075

Iron (Fe)0.006

Manganese (Mn)0.006

Zinc (Zn)0.0104

Copper (Cu)0.006

Boron (B)0.0018

Molybdenum (Mo)0.0002

Trace elements are chelated to remain available in both alkaline and acidic conditions. Plus seaweed extract.


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Indoor Plant Food 100ml

$14.00
Plant Runner Icon - Made in Australia
Plant Runner Icon - Horticulturally Backed
Plant Runner Icon - No Single Use Plastics
Plant Runner Icon - Donate with Every Purchase

FAQ

How often should I fertilise my plants?


While your plants are actively growing (spring and summer for most), feed fortnightly at the standard 1ml/litre rate. Over the cooler months, growth slows — ease back to a half-strength feed about once a month.

The simple rule: feed when the plant is growing, not by the calendar.

Can I use in passive hydro?

Yes — it works well in passive hydro. Add ½ml with each water change while plants are actively growing.

What is the shelf life of your Plant Food?

Five years.

What is the dilution rate?

1ml per litre of water.

Is your Plant Food ok for Orchids?

Yes, its fine to use on your orchids

Can I use it on outdoor plants, veggies and herbs?

Yes. It's fine outdoors and on edibles — just give your produce a wash before eating, as you would with anything.

Is your fertiliser a complete feed?

Yes. It carries the three macronutrients plants need most — nitrogen, phosphorus and potassium — plus secondary nutrients (calcium and magnesium), a full set of trace elements (boron, iron, manganese, zinc, copper and molybdenum) and seaweed extract. So your plants aren't left short of anything.

My Plant Food is lighter/darker than last time, has something changed?

Yes and no. It's the same product, with the same NPK and the same nutrient values. The only variable is the seaweed extract: it's shore-harvested and not from a single fixed source, so depending on the batch and variety, the colour can shift slightly. The feed itself is unchanged.

Will it burn my plants if I use too much?

Stick to 1ml per litre and you've got plenty of margin — it's a gentle, complete feed, not a harsh concentrate. If you do go heavier than intended, water through with plain water and resume at the right rate next time. The only real way to cause trouble is feeding hard and often through winter when the plant isn't growing, which lets unused salts build up in the mix. When in doubt, less.

My plant looks sad and isn't growing — will this fix it?

Sometimes, but it's worth being honest: feed helps a healthy plant do more, but it can't rescue one that's struggling with light, water or mix. If a plant is sitting in the wrong light, staying too wet, or stuck in tired mix, sort that first — then feeding gives it something to actually work with. Get the basics right and a good feed is what turns the corner.

Is it safe around pets and children?

It's a plant fertiliser, so it's not for eating — keep the bottle out of reach and stored sensibly, as you would any garden product. Once it's diluted and watered into the pot, there's nothing unusual to worry about. Just don't go drinking the concentrate.

Do I also need the Soil & Microbe Booster?


They do different jobs. Indoor Plant Food is your regular liquid feed — the nutrients a plant draws on as it grows. The Soil & Microbe Booster works on the soil, adding beneficial microbes and structure that help the mix stay alive and hold onto what you feed. Plenty of people use both; if you're starting with one, start with the feed.

Featured Post

Understanding Fertiliser

We created our Indoor Plant Food because we realised so many people had been overlooking the importance of it.  A good fertilising regime will keep your plants looking happy and healthy. 

Featured Post

How to fertilise plants in water? AKA Passive Hydro

Passive hydro (or passive hydroponics) is a type of hydroponic growing method that requires no recirculating systems, and instead supplies water only beneath the plant roots to be used by the plants.

Featured Post

Slow Release vs Liquid Fertiliser: When to use and what is the difference?

When talking about slow release fertilisers, we are talking about any fertiliser (synthetic or organic) that has been pelletised or produced as something that will slowly release nutrients into the soil over a period of time.

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