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Anthurium Fertilizer

Feed your anthurium through its growing months with our liquid Anthurium Fertilizer, made for anthuriums in indoor pots and bright, humid rooms. It supplies supplemental nutrition for glossy leaves and the colorful spathes a healthy plant produces in good light. Mix it with water and feed as part of your regular watering.

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When your anthurium may benefit from feeding

  • When your anthurium is actively unfolding new glossy leaves in warm, bright-indirect indoor conditions
  • When your anthurium is between colorful displays and putting energy into healthy new growth
  • When your established anthurium has used up nutrients in its barky or airy indoor mix over months of growth
  • When your anthurium resumes active growth after a slower season and its roots are healthy enough to use nutrients

Brown leaf margins may indicate low humidity or fertilizer buildup. Additional feeding will not correct poor drainage or insufficient light.

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for anthurium varieties

  • Flamingo Flower
  • Laceleaf
  • Bird's Nest Anthurium
  • King Anthurium
  • Queen Anthurium
  • Crystal Anthurium
  • Velvet Cardboard Anthurium
  • Anthurium

How to use

  1. Watering can

    1 tsp per quart (32 oz) of water

    Spring & summer: every 2 weeks · Fall & winter: every 4 weeks

  2. Leaf misting (optional)

    ½ tsp per pint (16 oz) of water

    Every 1–2 weeks

What's inside
The 2-2-3 ratio (2% nitrogen, 2% phosphate, 3% potash) is built for a plant that needs to grow leaves and set spathes at the same time — enough nitrogen for steady new foliage, with phosphorus and potassium weighted to support blooming rather than pushing leaf growth at the expense of flowers.

Beyond NPK: sea kelp (Ascophyllum nodosum) for natural growth compounds, plus calcium (0.5%), magnesium (0.25%), iron, manganese, zinc, boron, and copper. Calcium is the one anthuriums miss most in chunky orchid-style mixes — the deficiency that shows up as brown, crisping leaf edges on otherwise healthy plants.

How to care for anthuriums

Light

Bright, indirect light for most of the day. Direct midday sun burns the leaves, while deep shade slows growth and leaves you with foliage instead of flowers.

Water

Water when the top inch of mix feels dry, then let it drain fully. Anthuriums rot in standing water, so empty the saucer after every watering.

Soil

A chunky, airy mix drains best: orchid bark, perlite and peat or coco in roughly equal parts. Aim for a slightly acidic pH around 5.5 to 6.5.

Humidity

Anthuriums come from humid forests and like 60 percent or higher. Group plants together, set the pot on a pebble tray, or run a small humidifier in winter.

Feeding

Feed Anthurium Fertilizer with your regular watering every two weeks through spring and summer, and about once a month in fall and winter when growth slows.

Bloom

Spent blooms fade to green and then brown. Cut the stalk at its base, and expect a new flower every month or two once light and feeding stay steady.

Frequently asked questions

How often should I fertilize my anthurium?

Anthurium Fertilizer is built for small, steady doses rather than occasional heavy ones, which suits a plant with thick, sensitive roots in a loose, fast-draining mix. Mix 1 teaspoon per quart of water and feed every 2 weeks in spring and summer, then every 4 weeks in fall and winter as growth slows. Because it goes into your normal watering, nutrition stays consistent without salts building up in the bark. An optional leaf misting at ½ teaspoon per pint every 1–2 weeks can supplement root feeding.

Why isn't my anthurium blooming?

Usually light. Anthuriums flower on bright, indirect light and maturity, and a plant in a dim spot grows leaves but few spathes. Our 2-2-3 formula is a low-strength, balanced feed, not a bloom booster: it keeps your anthurium supplied with the nutrients it uses for leaves, roots and the occasional spathe, and the light does the rest. Feed on the regular schedule through the growing season and move your plant closer to a bright window before adding more fertilizer.

My leaf edges are turning brown — is that a nutrient problem?

Often, yes. Brown, crisping edges on otherwise healthy anthurium leaves usually trace to a calcium shortfall, which is common in the chunky bark-and-perlite mixes these plants are grown in, since that kind of mix holds very little calcium on its own. Anthurium Fertilizer carries 0.5% calcium along with magnesium and micronutrients to cover that gap. Leaves already damaged won’t repair themselves, but new growth should come in clean within a few weeks of steady feeding. If edges keep browning, check for dry air or inconsistent watering as well.

Will this burn my plant?

Anthurium Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water. Mixed at 1 teaspoon per quart and applied every 2 weeks in the growing season, the nutrients arrive in solution at a strength the roots take up as they water, and the all-nitrate nitrogen is a form roots absorb directly. For a recently repotted or newly acquired plant, start at half strength for the first two feedings.

Can I use it on rare foliage anthuriums?

Yes. Clarinervium, Crystallinum, Warocqueanum, Veitchii and the other velvet-leaf collectors’ plants have the same nutritional needs as flowering Andraeanum and Scherzerianum types, and Anthurium Fertilizer is formulated for the whole genus. The calcium and magnesium in the formula support full-sized leaves with crisp venation, and the modest nitrogen keeps new growth coming without forcing it. Use the same 1 teaspoon per quart whether your anthurium is potted in a chunky mix or mounted.

When will I see results?

Foliage responds first. With regular feeding, new leaves typically come in greener and glossier within the first few weeks, since the nitrate nitrogen in Anthurium Fertilizer is available to the roots as soon as it’s watered in. Blooms take longer, because spathes follow your anthurium's own growth cycle: an anthurium fed consistently through spring and summer, in bright indirect light, tends to produce more of them over the following cycle rather than overnight.

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What's inside your bottle — macronutrients (N-P-K), core minerals, micronutrients, and natural kelp
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Anthurium Fertilizer 8oz $11.99