Fertilising guide
How to fertilise Shasta daisy (Leucanthemum x superbum)— schedule & NPK
Also called Shasta daisy.
More about shasta daisy
About Shasta daisy
Leucanthemum x superbum · also called Shasta daisy · flowering
A classic cottage-garden perennial with large, pure-white single or double flowers and golden-yellow centres, blooming from early summer to early autumn. Thrives in full sun and well-drained soil. Mildly toxic to dogs and cats. Deadhead regularly to extend the long flowering season and divide every two to three years to maintain vigour.
Growth habit: Upright clump-forming herbaceous perennial with glossy dark-green toothed leaves and sturdy stems topped by large daisy-like flower heads up to 10 cm across.
What fertiliser shasta daisy actually wants — and why
Shasta daisy 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 shasta daisy: 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 shasta daisy, 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 shasta daisy:
Feed with a balanced granular fertiliser (e.g. 10-10-10) in early spring. Avoid high-nitrogen feeds that favour leafy growth over flowering. A second light feed after the first flush of flowers can encourage repeat blooming. 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 shasta daisy 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 shasta daisy
Half strength is the safe default for shasta daisy — 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 shasta daisy first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the shasta daisy watering schedule.
Signs you are over-feeding shasta daisy
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for shasta daisy:
- 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 shasta daisy
- 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 shasta daisy care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of shasta daisy 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 shasta daisy
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 shasta daisy — frequently asked questions
What fertiliser does shasta daisy 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. Shasta daisy 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 shasta daisy?
Feed with a balanced granular fertiliser (e.g. 10-10-10) in early spring. Avoid high-nitrogen feeds that favour leafy growth over flowering. A second light feed after the first flush of flowers can encourage repeat blooming. Feed with a balanced granular fertiliser (e.g. 10-10-10) in early spring. Avoid high-nitrogen feeds that favour leafy growth over flowering. A second light feed after the first flush of flowers can encourage repeat blooming. 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 shasta daisy?
Half strength is the safe default for shasta daisy — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding shasta daisy 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 shasta daisy 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 shasta daisy?
Flush the pot of shasta daisy 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
- Shasta daisy care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water shasta daisy — 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 fragrant bouquet hosta
- How to fertilise revolution hosta
- How to fertilise dolce blackcurrant heuchera
- All 6887 fertilising guides in the Growli library