Fertilising guide
How to fertilise Purple Dragon Dead Nettle (Lamium maculatum 'Purple Dragon')— schedule & NPK
Also called Purple Dragon Dead Nettle, Purple Dragon Spotted Dead Nettle.
More about purple dragon dead nettle
About Purple Dragon Dead Nettle
Lamium maculatum 'Purple Dragon' · also called Purple Dragon Dead Nettle, Purple Dragon Spotted Dead Nettle · flowering
An eye-catching cultivar with predominantly silver leaves bearing a wide green margin and exceptionally large, deep magenta-purple flowers — notably bigger than those of most other Lamium maculatum selections. Fast-growing and effective as ground cover under trees or in shaded borders. Hardy to USDA zone 3.
Growth habit: Fast-growing, prostrate, mat-forming semi-evergreen perennial; spreads rapidly by stolons
What fertiliser purple dragon dead nettle actually wants — and why
Purple Dragon Dead Nettle 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 purple dragon dead nettle: 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 purple dragon dead nettle, 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 purple dragon dead nettle:
A single application of balanced slow-release fertiliser in spring is sufficient. An early-summer top-dress can extend flowering. Cease feeding by late summer to avoid vulnerable new growth before frost. 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 purple dragon dead nettle 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 purple dragon dead nettle
Half strength is the safe default for purple dragon dead nettle — 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 purple dragon dead nettle first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the purple dragon dead nettle watering schedule.
Signs you are over-feeding purple dragon dead nettle
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for purple dragon dead nettle:
- 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 purple dragon dead nettle
- 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 purple dragon dead nettle care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of purple dragon dead nettle 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 purple dragon dead nettle
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 purple dragon dead nettle — frequently asked questions
What fertiliser does purple dragon dead nettle 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. Purple Dragon Dead Nettle 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 purple dragon dead nettle?
A single application of balanced slow-release fertiliser in spring is sufficient. An early-summer top-dress can extend flowering. Cease feeding by late summer to avoid vulnerable new growth before frost. A single application of balanced slow-release fertiliser in spring is sufficient. An early-summer top-dress can extend flowering. Cease feeding by late summer to avoid vulnerable new growth before frost. 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 purple dragon dead nettle?
Half strength is the safe default for purple dragon dead nettle — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding purple dragon dead nettle 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 purple dragon dead nettle 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 purple dragon dead nettle?
Flush the pot of purple dragon dead nettle 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
- Purple Dragon Dead Nettle care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water purple dragon dead nettle — 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 tree heath
- How to fertilise albert's gold tree heath
- How to fertilise autumn heath
- All 8452 fertilising guides in the Growli library