Fertilising guide
How to fertilise Gold Plate yarrow (Achillea filipendulina 'Gold Plate')— schedule & NPK
Also called Gold Plate yarrow, Fernleaf yarrow.
More about gold plate yarrow
About Gold Plate yarrow
Achillea filipendulina 'Gold Plate' · also called Gold Plate yarrow, Fernleaf yarrow · flowering
A tall, stately yarrow cultivar producing large, flat-topped golden-yellow flower heads up to 5 inches across on sturdy stems. Exceptionally drought-tolerant once established, it thrives in full sun and poor to average soils. Excellent for cutting and drying, and a top pollinator plant for bees and butterflies in borders and prairie-style plantings.
Growth habit: Upright, clump-forming herbaceous perennial with flat-topped corymb flower heads on stiff, erect stems
Watch for — Stem lodging (flopping): Tall stems may topple in windy sites or rich soils. Use grow-through supports inserted in spring, choose lean soil, and avoid high-nitrogen feeding.
What fertiliser gold plate yarrow actually wants — and why
Gold Plate yarrow 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 gold plate yarrow: 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 gold plate yarrow, 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 gold plate yarrow:
Little to no fertiliser needed. An annual top-dressing of compost in spring is sufficient. Excessive nitrogen promotes floppy stems and reduces flower quality. 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 gold plate yarrow 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 gold plate yarrow
Half strength is the safe default for gold plate yarrow — 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 gold plate yarrow first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the gold plate yarrow watering schedule.
Signs you are over-feeding gold plate yarrow
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for gold plate yarrow:
- 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 gold plate yarrow
- 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 gold plate yarrow care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of gold plate yarrow 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 gold plate yarrow
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 gold plate yarrow — frequently asked questions
What fertiliser does gold plate yarrow 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. Gold Plate yarrow 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 gold plate yarrow?
Little to no fertiliser needed. An annual top-dressing of compost in spring is sufficient. Excessive nitrogen promotes floppy stems and reduces flower quality. Little to no fertiliser needed. An annual top-dressing of compost in spring is sufficient. Excessive nitrogen promotes floppy stems and reduces flower quality. 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 gold plate yarrow?
Half strength is the safe default for gold plate yarrow — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding gold plate yarrow 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 gold plate yarrow 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 gold plate yarrow?
Flush the pot of gold plate yarrow 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
- Gold Plate yarrow care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water gold plate yarrow — 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 japanese spirea
- How to fertilise gold mound spirea
- How to fertilise thunberg spirea
- All 6887 fertilising guides in the Growli library