Fertilising guide
How to fertilise Philodendron Lemon Lime (Philodendron hederaceum 'Lemon Lime')— schedule & NPK
Also called Lemon Lime Philodendron, Neon Philodendron, Golden Heartleaf Philodendron.
More about philodendron lemon lime
About Philodendron Lemon Lime
Philodendron hederaceum 'Lemon Lime' · also called Lemon Lime Philodendron, Neon Philodendron · houseplant
Philodendron Lemon Lime is a fast-growing trailing aroid prized for vivid chartreuse, heart-shaped leaves. Give it bright indirect light, water when the top half of soil dries, and average household warmth. It is easy to grow and forgiving. It is toxic to cats, dogs and horses (ASPCA-listed), so keep it out of reach.
Growth habit: Vigorous trailing and climbing vine with cascading stems that look full in hanging baskets or can be trained up a moss pole. Leaves emerge pinkish-yellow, mature to chartreuse then deeper lime-green.
Watch for — Yellowing leaves: Usually overwatering, but can also stem from low light, nutrient shortage, or simply old leaves shedding naturally. If new growth yellows or many leaves yellow at once, check soil moisture and drainage first.
What fertiliser philodendron lemon lime actually wants — and why
Philodendron Lemon Lime is a genuinely hungry tropical — in bright warmth it pushes growth fast and rewards a regular half-strength balanced feed all season.
A balanced liquid feed (even N-P-K) or a slightly nitrogen-leaning foliage feed — this is a big-leaved foliage plant putting on real size, so it wants steady nitrogen for lush leaves, not a bloom formula.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for philodendron lemon lime: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed philodendron lemon lime, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For philodendron lemon lime:
Feed monthly during spring and summer with a balanced water-soluble houseplant fertiliser diluted to half strength. Reduce or stop feeding in autumn and winter when growth slows. Avoid over-fertilising, which can cause salt buildup and leaf-tip burn. For a fast grower like this that means feeding regularly — about monthly — right through spring through early autumn (roughly March to September), tapering off only as light drops in autumn.
The dormant-season rule matters more than the exact interval: skip feeding entirely when philodendron lemon lime is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for philodendron lemon lime
Half strength every feed is the sweet spot for philodendron lemon lime: frequent enough to fuel fast growth, dilute enough that it never scorches even when you feed often.
Feeding always goes onto already-damp soil, never dry roots — water philodendron lemon lime first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the philodendron lemon lime watering schedule.
Signs you are over-feeding philodendron lemon lime
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for philodendron lemon lime:
- Brown, scorched leaf tips and margins despite correct watering.
- A white salt crust on the soil or around the pot edge.
- Sudden leaf yellowing and drop shortly after a strong feed.
- Soft, weak, over-stretched growth that cannot support itself.
Signs you are under-feeding philodendron lemon lime
- New leaves coming in noticeably smaller than older ones.
- Pale, yellow-green older leaves and slow growth through peak summer.
- A general loss of vigour and gloss in a plant that should be racing away.
If the symptoms point at watering, light or roots rather than nutrition, the full philodendron lemon lime care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Because you feed often, salts accumulate faster — flush the pot of philodendron lemon lime with plain water until it drains freely roughly every month through the feeding season to keep the root zone clean.
Organic vs synthetic feeds for philodendron lemon lime
Organic options
A diluted seaweed or fish-and-seaweed feed plus a yearly top-dress of worm castings supports fast growth without burn risk. UK: Westland seaweed or Baby Bio Organic; US: Neptune's Harvest or Espoma Indoor!.
Synthetic / liquid feeds
A balanced houseplant liquid at half strength applied frequently — UK: Baby Bio, Phostrogen or Westland Houseplant Feed; US: Miracle-Gro Indoor Plant Food or Dyna-Gro Foliage-Pro for steady leafy growth.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising philodendron lemon lime — frequently asked questions
What fertiliser does philodendron lemon lime need?
A balanced liquid feed (even N-P-K) or a slightly nitrogen-leaning foliage feed — this is a big-leaved foliage plant putting on real size, so it wants steady nitrogen for lush leaves, not a bloom formula. Philodendron Lemon Lime is a genuinely hungry tropical — in bright warmth it pushes growth fast and rewards a regular half-strength balanced feed all season.
How often should I feed philodendron lemon lime?
Feed monthly during spring and summer with a balanced water-soluble houseplant fertiliser diluted to half strength. Reduce or stop feeding in autumn and winter when growth slows. Avoid over-fertilising, which can cause salt buildup and leaf-tip burn. Feed monthly during spring and summer with a balanced water-soluble houseplant fertiliser diluted to half strength. Reduce or stop feeding in autumn and winter when growth slows. Avoid over-fertilising, which can cause salt buildup and leaf-tip burn. For a fast grower like this that means feeding regularly — about monthly — right through spring through early autumn (roughly March to September), tapering off only as light drops in autumn.
What strength of feed for philodendron lemon lime?
Half strength every feed is the sweet spot for philodendron lemon lime: frequent enough to fuel fast growth, dilute enough that it never scorches even when you feed often.
What does over-feeding philodendron lemon lime look like?
Brown, scorched leaf tips and margins despite correct watering. A white salt crust on the soil or around the pot edge. Sudden leaf yellowing and drop shortly after a strong feed. Soft, weak, over-stretched growth that cannot support itself. The mistake here is the opposite of most houseplants: under-feeding a fast tropical in peak season starves it, leaving small, pale new leaves and slow growth — but full-strength doses still burn it, so feed often and weak, not occasionally and strong.
Should I flush the soil of philodendron lemon lime?
Because you feed often, salts accumulate faster — flush the pot of philodendron lemon lime with plain water until it drains freely roughly every month through the feeding season to keep the root zone clean.
Keep reading
- Philodendron Lemon Lime care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water philodendron lemon lime — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise snake plant
- How to fertilise dracaena
- How to fertilise peperomia
- All 389 fertilising guides in the Growli library