Everything Indoor

Everything gardeners need to bring life to each indoor leaf.
Whether your monstera’s drooping or your ZZ has stalled, this is
your go-to, no-nonsense solution to deliver the complete nutrition
your plants need.

Balanced 3-3-3 NPK formula — safe, clean, and easy to use
Works on over 30+ houseplant varieties
imple capful dosing - no spoons or scales
Concentrated, vegan, and blended & bottled in the USA
Trusted by indoor gardeners of all levels

$12.97

Real plant care means feeding — not just watering.

Tired plants don’t whisper, they beg. Yet most houseplant fertilizers are either too weak, too confusing, or too risky to use regularly.
Everything Indoor feeds what they’ve been missing: a complete, balanced elixir that sparks growth, without the risk of overdoing it.Just a capful in your watering can and you’re good to grow.

“My houseplants were struggling after a move indoors. This gave
them a real perk-up."

Optimized for indoors: Helps plants thrive in lower light and
controlled humidity.

Clean and consistent: No synthetic smells or sticky residue
left behind.

Houseplant-wide compatibility: Works great on ZZs, prayer plants, pothos, orchids, monstera, and so many more.

Safe and simple: Gentle formula you can trust to use weekly —
without damage.

No stress measuring: Doses by capful, not teaspoons, spoons,
digital scales, or arcane measurements.

Supports everyday growth: Encourages strong stems, vibrant
leaves, and healthy roots.

Optimized for indoors: Helps plants thrive in lower light and
controlled humidity.

Clean and consistent: No synthetic smells or sticky residue
left behind.

Houseplant-wide compatibility: Works great on ZZs, prayer plants, pothos, orchids, monstera, and so many more.

Safe and simple: Gentle formula you can trust to use weekly —
without damage.

No stress measuring: Doses by capful, not teaspoons, spoons,
digital scales, or arcane measurements.

Supports everyday growth: Encourages strong stems, vibrant
leaves, and healthy roots.

See How It Works

What’s inside?

Every capful carries a precise, clean, potent blends:

Nitrogen (3%) for lush green growth and leaf development
Phosphorus (3%) to support root structure and energy transfer
Potassium (3%) for overall vigor and resilience
Kelp extract for micronutrients and natural growth stimulation

It’s 100% water-soluble, vegan, and gentle enough for weekly feeding
rituals. Made in the USA.

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How to use Everything Indoor in 4 easy steps.

1

Shake the bottle well — awaken the formula.

2

Add 1 capful per 2 cups of water.

3

Water each plant with care.

4

Feed weekly (or as your plants call for it).

“I love that I don’t have to think about measurements. The cap makes it easy."

Your houseplants are waiting — answer their call.

Skipping fertilizer? Fading leaves and drooping stems are silent
cries your plants need more than just water.

Everything Indoor gives them complete nutrition to restore vigor and
encourage greener growth in one simple step. No confusing ratios. No nutrient burn. No wasted product.

“My plants bounced back fast — greener, perkier, and finally growing again.”

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Gardener reviews from the indoor realm.

Everything you need to know about Everything Indoor.

Yes, Everything Indoor is formulated to be an all-purpose indoor plant fertilizer. That means it’s safe and effective on popular houseplants like pothos, prayer plants, ferns, philodendrons, succulents, ZZ plants, snake plants, orchids, and more. Whether you’re a beginner or experienced gardener, it takes the guesswork out of feeding.

For most indoor plants, using Everything Indoor once a week is ideal.You can adjust based on your plant’s growth rate, season, or sensitivity. Many of our customers feed weekly during spring and summer, and taper to bi-weekly in winter.

Everything Indoor is made in the USA, designed specifically for indoor plant needs, and doesn’t contain synthetic fillers or confusing additives. Unlike many mass-market options, it’s gentle enough for weekly use and trusted by thousands of everyday gardeners for real, visible results – without risk of nutrient burn.

Each bottle cap holds roughly 1 teaspoon. Simply add one capful of Everything Indoor per 2 cups of water, mix, and apply when watering. No need for measuring spoons or complicated math.

Everything Indoor is 100% vegan and contains no animal byproducts.It’s derived from plant-safe compounds like Monopotassium Phosphate and Kelp, making it a great choice for eco-conscious gardeners.

Once diluted and absorbed into the soil, Everything Indoor is safe for your pets. As a precaution, store the concentrated liquid away from curious pets and children.

Absolutely. While it’s optimized for indoor growing conditions, many of our customers use Everything Indoor on patios, balconies, and shaded porch plants with great success.

You can use Everything Indoor as your main source of nutrition. It provides balanced NPK along with kelp-derived micronutrients, making it a complete fertilizer solution.

This formula features a 3-3-3 NPK ratio: balanced Nitrogen,Phosphorus, and Potassium. That means it supports all aspects of your plant health (roots, stems, leaves, and flowers) without pushing growth too fast or burning roots.

Over one hundred thousand gardeners trust Humboldts

Secret to keep their plants
thriving.

Feeding your plants shouldn’t feel complicated. Everything Indoor keeps it clean, clear, and enchantingly effective — so your plants thrive and your routine stays simple.

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