Fertilising guide
How to fertilise Dwarf Cedar of Lebanon (Cedrus libani 'Nana')— schedule & NPK
Also called Dwarf Cedar of Lebanon, Compact Cedar of Lebanon.
More about dwarf cedar of lebanon
About Dwarf Cedar of Lebanon
Cedrus libani 'Nana' · also called Dwarf Cedar of Lebanon, Compact Cedar of Lebanon · houseplant
A dense, slow-growing dwarf cultivar of the Cedar of Lebanon, a species native to the Taurus and Lebanon mountain ranges. It forms a tight, irregular mound with stiff, dark-green needles and an architectural quality that suits rock gardens and formal borders. It is one of the hardiest true cedars, tolerating considerable cold, but insists on full sun and sharply drained soil. Cedrus libani is not toxic to cats or dogs.
Growth habit: Dense, broadly mounding to irregularly rounded dwarf shrub; extremely slow-growing at approximately 2–4 cm per year.
What fertiliser dwarf cedar of lebanon actually wants — and why
Dwarf Cedar of Lebanon 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 dwarf cedar of lebanon: 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 dwarf cedar of lebanon, 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 dwarf cedar of lebanon:
A light top-dressing of balanced granular fertiliser in early spring is sufficient; avoid high-nitrogen feeds which promote soft growth vulnerable to aphid attack. Treat that as sparingly through the growing season 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 dwarf cedar of lebanon 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 dwarf cedar of lebanon
Half strength is the safe default for dwarf cedar of lebanon — 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 dwarf cedar of lebanon first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the dwarf cedar of lebanon watering schedule.
Signs you are over-feeding dwarf cedar of lebanon
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for dwarf cedar of lebanon:
- 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 dwarf cedar of lebanon
- 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 dwarf cedar of lebanon care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of dwarf cedar of lebanon 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 dwarf cedar of lebanon
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 dwarf cedar of lebanon — frequently asked questions
What fertiliser does dwarf cedar of lebanon 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. Dwarf Cedar of Lebanon 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 dwarf cedar of lebanon?
A light top-dressing of balanced granular fertiliser in early spring is sufficient; avoid high-nitrogen feeds which promote soft growth vulnerable to aphid attack. A light top-dressing of balanced granular fertiliser in early spring is sufficient; avoid high-nitrogen feeds which promote soft growth vulnerable to aphid attack. Treat that as sparingly through the growing season 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 dwarf cedar of lebanon?
Half strength is the safe default for dwarf cedar of lebanon — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding dwarf cedar of lebanon 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 dwarf cedar of lebanon 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 dwarf cedar of lebanon?
Flush the pot of dwarf cedar of lebanon 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
- Dwarf Cedar of Lebanon care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water dwarf cedar of lebanon — 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 colima butterwort
- How to fertilise tricolor bladderwort
- How to fertilise humboldt's bladderwort
- All 10153 fertilising guides in the Growli library