Fertilising guide
How to fertilise Pink Ice Plant (Oscularia deltoides)— schedule & NPK
Also called Pink Ice Plant, Delta Dew Plant, Deltoid-Leaved Dewplant.
More about pink ice plant
About Pink Ice Plant
Oscularia deltoides · also called Pink Ice Plant, Delta Dew Plant · flowering
Oscularia deltoides is a fast-growing South African succulent sub-shrub that smothers itself in fragrant, bright pink daisy-like flowers in spring and early summer. Its blue-grey, triangular leaves have attractive serrated margins. Excellent for hanging baskets, rockeries, and groundcover in frost-free gardens. Very drought-tolerant once established. Considered mildly toxic.
Growth habit: Spreading succulent sub-shrub; trailing stems make it excellent for hanging baskets and groundcover
Watch for — Failure to flower: Usually caused by insufficient direct sunlight or over-fertilising with nitrogen. Move to the sunniest available position and switch to a high-potassium feed. Flowers open only in sunlight and close at night, so shaded plants appear not to bloom.
What fertiliser pink ice plant actually wants — and why
Pink Ice Plant is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root 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 pink ice plant: 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 pink ice plant, 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 pink ice plant:
Apply a diluted low-nitrogen, high-potassium fertiliser (e.g. tomato feed diluted to half strength) once monthly during the flowering period (spring to early summer). Avoid high-nitrogen feeds which suppress flowering. Do not feed in winter. Treat that as monthly between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when pink ice plant 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 pink ice plant
Half strength is the safe default for pink ice plant — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water pink ice plant first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the pink ice plant watering schedule.
Signs you are over-feeding pink ice plant
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for pink ice plant:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding pink ice plant
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full pink ice plant care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of pink ice plant with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for pink ice plant
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
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 pink ice plant — frequently asked questions
What fertiliser does pink ice plant need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Pink Ice Plant is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed pink ice plant?
Apply a diluted low-nitrogen, high-potassium fertiliser (e.g. tomato feed diluted to half strength) once monthly during the flowering period (spring to early summer). Avoid high-nitrogen feeds which suppress flowering. Do not feed in winter. Apply a diluted low-nitrogen, high-potassium fertiliser (e.g. tomato feed diluted to half strength) once monthly during the flowering period (spring to early summer). Avoid high-nitrogen feeds which suppress flowering. Do not feed in winter. Treat that as monthly between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for pink ice plant?
Half strength is the safe default for pink ice plant — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding pink ice plant look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding pink ice plant year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of pink ice plant?
Flush the pot of pink ice plant with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Pink Ice Plant care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water pink ice plant — 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 dahlia 'bishop of llandaff'
- How to fertilise pompon dahlia 'jowey mirella'
- How to fertilise cosmos 'sensation'
- All 6887 fertilising guides in the Growli library