Fertilising guide
How to fertilise Scarlet Martagon Lily (Lilium chalcedonicum)— schedule & NPK
Also called Scarlet Martagon Lily, Scarlet Turk's Cap Lily, Chalcedonian Lily.
More about scarlet martagon lily
About Scarlet Martagon Lily
Lilium chalcedonicum · also called Scarlet Martagon Lily, Scarlet Turk's Cap Lily · flowering
Lilium chalcedonicum is a brilliant, fiery scarlet Turk's cap lily native to the rocky limestone hillsides and open woodland of Greece and Albania, bearing 5–10 pendant, strongly reflexed flowers of intense scarlet-orange per stem in midsummer. One of the most vibrantly coloured true lilies, it grows from a scaly bulb and prefers well-drained alkaline soil in full sun — unlike many shade-loving martagon relatives. Severely toxic to cats, and all Lilium species are toxic to dogs and horses.
Growth habit: Erect bulbous perennial with lance-shaped, scattered leaves and terminal racemes of pendant, strongly reflexed scarlet-orange Turk's cap flowers; stem-rooting above the bulb
What fertiliser scarlet martagon lily actually wants — and why
Scarlet Martagon Lily 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 scarlet martagon lily: 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 scarlet martagon lily, 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 scarlet martagon lily:
Apply a balanced slow-release granular fertiliser (10-10-10) in early spring as shoots emerge. Follow with a high-potassium liquid feed fortnightly once buds appear until flowering. Avoid excessive nitrogen, which promotes disease-susceptible, lush foliage at the expense of the bulb. 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 scarlet martagon lily 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 scarlet martagon lily
Half strength is the safe default for scarlet martagon lily — 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 scarlet martagon lily first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the scarlet martagon lily watering schedule.
Signs you are over-feeding scarlet martagon lily
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for scarlet martagon lily:
- 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 scarlet martagon lily
- 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 scarlet martagon lily care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of scarlet martagon lily 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 scarlet martagon lily
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 scarlet martagon lily — frequently asked questions
What fertiliser does scarlet martagon lily 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. Scarlet Martagon Lily 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 scarlet martagon lily?
Apply a balanced slow-release granular fertiliser (10-10-10) in early spring as shoots emerge. Follow with a high-potassium liquid feed fortnightly once buds appear until flowering. Avoid excessive nitrogen, which promotes disease-susceptible, lush foliage at the expense of the bulb. Apply a balanced slow-release granular fertiliser (10-10-10) in early spring as shoots emerge. Follow with a high-potassium liquid feed fortnightly once buds appear until flowering. Avoid excessive nitrogen, which promotes disease-susceptible, lush foliage at the expense of the bulb. 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 scarlet martagon lily?
Half strength is the safe default for scarlet martagon lily — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding scarlet martagon lily 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 scarlet martagon lily 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 scarlet martagon lily?
Flush the pot of scarlet martagon lily 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
- Scarlet Martagon Lily care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water scarlet martagon lily — 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 dazzler cosmos
- How to fertilise field marigold
- How to fertilise pink surprise calendula
- All 10153 fertilising guides in the Growli library