Fertilising guide
How to fertilise Cuban Cigar Calathea (Calathea lutea)— schedule & NPK
Also called Cuban cigar calathea, Cigar calathea, Havana cigar plant, Mexican cigar plant, Bijao.
More about cuban cigar calathea
About Cuban Cigar Calathea
Calathea lutea · also called Cuban cigar calathea, Cigar calathea · tropical
Calathea lutea, the Cuban cigar plant, is a dramatic rhizomatous tropical in the prayer-plant family (Marantaceae) with huge paddle-shaped leaves backed in silvery-waxy bloom. It wants bright indirect light, steadily moist soil and high humidity. The ASPCA lists Calathea as non-toxic to cats and dogs, making it pet-safe.
Growth habit: Clump-forming, rhizomatous evergreen perennial that sends up long-petioled, upright, paddle-shaped leaves from a spreading rootstock; vigorous and architectural rather than trailing.
Watch for — Brown, crispy leaf edges: Usually low humidity, underwatering, or sensitivity to chlorine/fluoride/salts in tap water. Raise humidity and switch to filtered, distilled or rainwater.
What fertiliser cuban cigar calathea actually wants — and why
Cuban Cigar Calathea 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 cuban cigar calathea: 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 cuban cigar calathea, 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 cuban cigar calathea:
Feed monthly through spring and summer with a balanced, diluted liquid houseplant fertiliser (e.g. 10-10-10). It is salt-sensitive, so dilute well and flush the soil occasionally to prevent fertiliser-salt buildup and tip burn. Stop feeding in autumn and winter while growth rests. 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 cuban cigar calathea 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 cuban cigar calathea
Half strength is the safe default for cuban cigar calathea — 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 cuban cigar calathea first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the cuban cigar calathea watering schedule.
Signs you are over-feeding cuban cigar calathea
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for cuban cigar calathea:
- 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 cuban cigar calathea
- 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 cuban cigar calathea care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of cuban cigar calathea 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 cuban cigar calathea
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 cuban cigar calathea — frequently asked questions
What fertiliser does cuban cigar calathea 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. Cuban Cigar Calathea 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 cuban cigar calathea?
Feed monthly through spring and summer with a balanced, diluted liquid houseplant fertiliser (e.g. 10-10-10). It is salt-sensitive, so dilute well and flush the soil occasionally to prevent fertiliser-salt buildup and tip burn. Stop feeding in autumn and winter while growth rests. Feed monthly through spring and summer with a balanced, diluted liquid houseplant fertiliser (e.g. 10-10-10). It is salt-sensitive, so dilute well and flush the soil occasionally to prevent fertiliser-salt buildup and tip burn. Stop feeding in autumn and winter while growth rests. 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 cuban cigar calathea?
Half strength is the safe default for cuban cigar calathea — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding cuban cigar calathea 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 cuban cigar calathea 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 cuban cigar calathea?
Flush the pot of cuban cigar calathea 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
- Cuban Cigar Calathea care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water cuban cigar calathea — 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 monstera
- How to fertilise pothos
- How to fertilise fiddle leaf fig
- All 609 fertilising guides in the Growli library