Fertilising guide
How to fertilise Elk Horns Pig's Ear (Cotyledon orbiculata 'Elk Horns')— schedule & NPK
Also called Elk Horns Pig's Ear, Elk Horns Cotyledon.
More about elk horns pig's ear
About Elk Horns Pig's Ear
Cotyledon orbiculata 'Elk Horns' · also called Elk Horns Pig's Ear, Elk Horns Cotyledon · houseplant
A sculptural South African succulent cultivar whose powdery silver-white leaves develop distinctively pronged, antler-like tips as they mature — giving rise to the 'Elk Horns' name. Slow-growing and drought-adapted, it needs bright sun, extremely free-draining soil, and infrequent deep watering to thrive. Keep away from all pets — all Cotyledon contain cardiac glycosides.
Growth habit: Slow-growing upright to semi-shrubby rosette; woody at base with age
What fertiliser elk horns pig's ear actually wants — and why
Elk Horns Pig's Ear is a light-feeding succulent — a gentle, low-nitrogen feed a few times in growth keeps it plump without forcing the weak, stretched growth over-feeding causes.
A cactus and succulent formula or a diluted balanced feed with modest, even numbers. Avoid high-nitrogen plant foods — they make a succulent etiolate and grow soft, fracture-prone tissue.
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 elk horns pig's ear: 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 elk horns pig's ear, 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 elk horns pig's ear:
Feed once in spring with a balanced cactus fertiliser diluted to half strength. A single additional dose in early summer is optional. Do not fertilise in autumn or winter. Keep that to sparingly through the growing season between spring through early autumn (roughly March to September) and stop entirely once growth slows for winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when elk horns pig's ear 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 elk horns pig's ear
Quarter to half strength at most for elk horns pig's ear. Succulents take up very little, and a strong dose burns the fine roots before the plant can use it.
Feeding always goes onto already-damp soil, never dry roots — water elk horns pig's ear first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the elk horns pig's ear watering schedule.
Signs you are over-feeding elk horns pig's ear
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for elk horns pig's ear:
- Stretched, leggy, pale growth with widely spaced leaves.
- A white salt crust on the soil or around the pot rim.
- Brown, crisped leaf tips and edges.
- Soft, mushy tissue at the base — over-feeding plus damp soil rots it.
Signs you are under-feeding elk horns pig's ear
- Uncommon — succulents tolerate lean conditions well.
- Very slow growth and dull, faded colour over a long period.
- Older leaves shed faster than new ones replace them in a tired old mix.
If the symptoms point at watering, light or roots rather than nutrition, the full elk horns pig's ear care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Feed lightly enough and you rarely need to flush, but once a year run plain water through the pot of elk horns pig's ear until it drains clear, and refresh the gritty mix every 2-3 years.
Organic vs synthetic feeds for elk horns pig's ear
Organic options
A heavily diluted seaweed or worm-casting feed once or twice in summer. UK: a drop of Westland seaweed feed; US: quarter-strength Espoma Cactus! or Dr. Earth liquid. Fresh free-draining mix matters more than any feed.
Synthetic / liquid feeds
A dedicated cactus/succulent liquid at quarter to half strength — UK: Baby Bio Cacti & Succulent Drip Feeders or Westland; US: Miracle-Gro Succulent Plant Food or Schultz Cactus Plus.
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 elk horns pig's ear — frequently asked questions
What fertiliser does elk horns pig's ear need?
A cactus and succulent formula or a diluted balanced feed with modest, even numbers. Avoid high-nitrogen plant foods — they make a succulent etiolate and grow soft, fracture-prone tissue. Elk Horns Pig's Ear is a light-feeding succulent — a gentle, low-nitrogen feed a few times in growth keeps it plump without forcing the weak, stretched growth over-feeding causes.
How often should I feed elk horns pig's ear?
Feed once in spring with a balanced cactus fertiliser diluted to half strength. A single additional dose in early summer is optional. Do not fertilise in autumn or winter. Feed once in spring with a balanced cactus fertiliser diluted to half strength. A single additional dose in early summer is optional. Do not fertilise in autumn or winter. Keep that to sparingly through the growing season between spring through early autumn (roughly March to September) and stop entirely once growth slows for winter.
What strength of feed for elk horns pig's ear?
Quarter to half strength at most for elk horns pig's ear. Succulents take up very little, and a strong dose burns the fine roots before the plant can use it.
What does over-feeding elk horns pig's ear look like?
Stretched, leggy, pale growth with widely spaced leaves. A white salt crust on the soil or around the pot rim. Brown, crisped leaf tips and edges. Soft, mushy tissue at the base — over-feeding plus damp soil rots it. Feeding elk horns pig's ear like a leafy houseplant is the classic error — it produces a flush of pale, stretched, floppy growth that never firms up and is prone to rot at the base.
Should I flush the soil of elk horns pig's ear?
Feed lightly enough and you rarely need to flush, but once a year run plain water through the pot of elk horns pig's ear until it drains clear, and refresh the gritty mix every 2-3 years.
Keep reading
- Elk Horns Pig's Ear care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water elk horns pig's ear — 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 philodendron hederaceum heartleaf variegata
- How to fertilise philodendron hastatum
- How to fertilise philodendron gloriosum colombia
- All 8452 fertilising guides in the Growli library