Fertilising guide
How to fertilise Cinnamon Bunny Ears (Opuntia microdasys var. rufida)— schedule & NPK
Also called Red Bunny Ears, Cinnamon Cactus.
More about cinnamon bunny ears
About Cinnamon Bunny Ears
Opuntia microdasys var. rufida · also called Red Bunny Ears, Cinnamon Cactus · houseplant
Cinnamon Bunny Ears is a slow, clump-forming Opuntia prized for flat green pads studded with rusty-brown glochids in neat polka-dot rows. Unlike the type, var. rufida lacks long spines but its barbed glochids detach at a touch. Give it bright direct sun, gritty fast-draining mix, sparse winter water, and warmth; it stays compact and sculptural indoors.
Growth habit: Slow-growing, clumping shrubby cactus that builds up branching flattened pads (cladodes) into a dense, tiered mound over years.
Watch for — Etiolation (pale, stretched growth): Too little light makes pads thin, elongated, and leaning. Move to the brightest window or add a grow light for several hours of direct exposure.
What fertiliser cinnamon bunny ears actually wants — and why
Cinnamon Bunny Ears 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 cinnamon bunny ears: 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 cinnamon bunny ears, 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 cinnamon bunny ears:
Feed lightly once a month in spring and summer with a balanced cactus fertiliser diluted to half strength. Do not feed in autumn or winter while the plant is dormant. Keep that to once a month 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 cinnamon bunny ears 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 cinnamon bunny ears
Quarter to half strength at most for cinnamon bunny ears. 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 cinnamon bunny ears first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the cinnamon bunny ears watering schedule.
Signs you are over-feeding cinnamon bunny ears
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for cinnamon bunny ears:
- 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 cinnamon bunny ears
- 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 cinnamon bunny ears 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 cinnamon bunny ears until it drains clear, and refresh the gritty mix every 2-3 years.
Organic vs synthetic feeds for cinnamon bunny ears
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 cinnamon bunny ears — frequently asked questions
What fertiliser does cinnamon bunny ears 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. Cinnamon Bunny Ears 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 cinnamon bunny ears?
Feed lightly once a month in spring and summer with a balanced cactus fertiliser diluted to half strength. Do not feed in autumn or winter while the plant is dormant. Feed lightly once a month in spring and summer with a balanced cactus fertiliser diluted to half strength. Do not feed in autumn or winter while the plant is dormant. Keep that to once a month between spring through early autumn (roughly March to September) and stop entirely once growth slows for winter.
What strength of feed for cinnamon bunny ears?
Quarter to half strength at most for cinnamon bunny ears. Succulents take up very little, and a strong dose burns the fine roots before the plant can use it.
What does over-feeding cinnamon bunny ears 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 cinnamon bunny ears 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 cinnamon bunny ears?
Feed lightly enough and you rarely need to flush, but once a year run plain water through the pot of cinnamon bunny ears until it drains clear, and refresh the gritty mix every 2-3 years.
Keep reading
- Cinnamon Bunny Ears care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water cinnamon bunny ears — 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 1284 fertilising guides in the Growli library