Fertilising guide
How to fertilise Hoya lacunosa (Hoya lacunosa)— schedule & NPK
Also called Cinnamon Hoya, Cinnamon-scented wax plant, Furry Hoya, Lacunosa wax plant.
More about hoya lacunosa
About Hoya lacunosa
Hoya lacunosa · also called Cinnamon Hoya, Cinnamon-scented wax plant · houseplant
Hoya lacunosa is a compact, trailing epiphytic wax plant prized for clusters of small, cinnamon-scented white flowers and dense, slightly sunken-veined foliage. Give it bright indirect light, let the airy mix dry out between waterings, and keep it warm. The ASPCA does not flag the Hoya genus as toxic, making it broadly pet-friendly.
Growth habit: Compact, fast-growing trailing/vining epiphyte with slender stems and small, narrow leaves bearing slightly sunken (lacunose) veins. Suits hanging baskets, shelves and small trellises. Produces ball-shaped umbels of fragrant white, cinnamon-scented flowers in spring and summer (sometimes year-round) from persistent flower spurs (peduncles).
Watch for — Leaf scorch: Harsh direct midday or afternoon sun bleaches or burns the thin foliage. Provide bright indirect light or only gentle morning sun, and move plants back from hot, unfiltered windows.
What fertiliser hoya lacunosa actually wants — and why
Hoya lacunosa 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 hoya lacunosa: 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 hoya lacunosa, 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 hoya lacunosa:
Feed lightly during the spring-summer growing season with a balanced or bloom-supporting houseplant fertiliser diluted to roughly half strength, about every 3-4 weeks. A high-potassium feed can encourage flowering. Avoid over-fertilising, which causes salt buildup and leaf-tip burn; reduce or stop feeding in autumn and winter. Organic options such as worm castings work well too. For a fast grower like this that means feeding regularly — about every 3-4 weeks — 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 hoya lacunosa 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 hoya lacunosa
Half strength every feed is the sweet spot for hoya lacunosa: 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 hoya lacunosa first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the hoya lacunosa watering schedule.
Signs you are over-feeding hoya lacunosa
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for hoya lacunosa:
- 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 hoya lacunosa
- 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 hoya lacunosa 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 hoya lacunosa 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 hoya lacunosa
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 hoya lacunosa — frequently asked questions
What fertiliser does hoya lacunosa 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. Hoya lacunosa 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 hoya lacunosa?
Feed lightly during the spring-summer growing season with a balanced or bloom-supporting houseplant fertiliser diluted to roughly half strength, about every 3-4 weeks. A high-potassium feed can encourage flowering. Avoid over-fertilising, which causes salt buildup and leaf-tip burn; reduce or stop feeding in autumn and winter. Organic options such as worm castings work well too. Feed lightly during the spring-summer growing season with a balanced or bloom-supporting houseplant fertiliser diluted to roughly half strength, about every 3-4 weeks. A high-potassium feed can encourage flowering. Avoid over-fertilising, which causes salt buildup and leaf-tip burn; reduce or stop feeding in autumn and winter. Organic options such as worm castings work well too. For a fast grower like this that means feeding regularly — about every 3-4 weeks — right through spring through early autumn (roughly March to September), tapering off only as light drops in autumn.
What strength of feed for hoya lacunosa?
Half strength every feed is the sweet spot for hoya lacunosa: frequent enough to fuel fast growth, dilute enough that it never scorches even when you feed often.
What does over-feeding hoya lacunosa 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 hoya lacunosa?
Because you feed often, salts accumulate faster — flush the pot of hoya lacunosa with plain water until it drains freely roughly every month through the feeding season to keep the root zone clean.
Keep reading
- Hoya lacunosa care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water hoya lacunosa — 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