Fertilising guide
How to fertilise Silver Mound Artemisia (Artemisia schmidtiana 'Nana')— schedule & NPK
Also called Silver Mound, Silver Mound artemisia, silky wormwood.
More about silver mound artemisia
About Silver Mound Artemisia
Artemisia schmidtiana 'Nana' · also called Silver Mound, Silver Mound artemisia · flowering
Silver Mound is a compact ornamental wormwood grown for its soft, feathery, silvery-silken foliage that forms a neat cushion-like dome. Its insignificant flowers are secondary to the shimmering leaf texture, which contrasts beautifully in borders and edging. A sun-loving, drought-hardy perennial, it demands sharp drainage and lean soil, and tends to split open in rich or moist ground.
Growth habit: Low, dense, cushion-forming herbaceous perennial of fine filigree foliage making a rounded silver mound, grown for texture rather than its minor flowers.
Watch for — Floppiness from over-feeding: Fertile soil and feeding cause loose, sprawling growth. Grow it hungry in poor ground and skip fertiliser to keep it compact.
What fertiliser silver mound artemisia actually wants — and why
Silver Mound Artemisia 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 silver mound artemisia: 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 silver mound artemisia, 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 silver mound artemisia:
Avoid feeding. This plant performs best in poor soil; fertiliser produces lush, floppy growth that splits open at the centre. A thin grit mulch is preferable to compost. 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 silver mound artemisia 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 silver mound artemisia
Half strength is the safe default for silver mound artemisia — 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 silver mound artemisia first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the silver mound artemisia watering schedule.
Signs you are over-feeding silver mound artemisia
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for silver mound artemisia:
- 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 silver mound artemisia
- 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 silver mound artemisia care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of silver mound artemisia 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 silver mound artemisia
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 silver mound artemisia — frequently asked questions
What fertiliser does silver mound artemisia 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. Silver Mound Artemisia 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 silver mound artemisia?
Avoid feeding. This plant performs best in poor soil; fertiliser produces lush, floppy growth that splits open at the centre. A thin grit mulch is preferable to compost. Avoid feeding. This plant performs best in poor soil; fertiliser produces lush, floppy growth that splits open at the centre. A thin grit mulch is preferable to compost. 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 silver mound artemisia?
Half strength is the safe default for silver mound artemisia — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding silver mound artemisia 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 silver mound artemisia 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 silver mound artemisia?
Flush the pot of silver mound artemisia 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
- Silver Mound Artemisia care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water silver mound artemisia — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
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- All 3899 fertilising guides in the Growli library