Fertilising guide
How to fertilise Sanguisorba officinalis (Sanguisorba officinalis)— schedule & NPK
Also called great burnet, blood-wort.
More about sanguisorba officinalis
About Sanguisorba officinalis
Sanguisorba officinalis · also called great burnet, blood-wort · flowering
A graceful meadow perennial bearing deep maroon-red, bottlebrush flower heads on tall, wiry stems from midsummer into autumn, swaying above pinnate, fern-like foliage. Native to damp grasslands, great burnet reaches up to 1.2 m and brings airy, see-through structure to naturalistic borders. Hardy and pollinator-rich, it suits prairie and meadow planting beautifully.
Growth habit: Clump-forming herbaceous perennial with basal pinnate foliage and tall, slender, branching flower stems carrying compact oblong flower heads.
What fertiliser sanguisorba officinalis actually wants — and why
Sanguisorba officinalis 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 sanguisorba officinalis: 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 sanguisorba officinalis, 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 sanguisorba officinalis:
Minimal feeding needed. A spring mulch of compost or one balanced feed supports growth; over-rich conditions can encourage floppy stems, so feed moderately. 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 sanguisorba officinalis 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 sanguisorba officinalis
Half strength is the safe default for sanguisorba officinalis — 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 sanguisorba officinalis first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the sanguisorba officinalis watering schedule.
Signs you are over-feeding sanguisorba officinalis
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for sanguisorba officinalis:
- 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 sanguisorba officinalis
- 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 sanguisorba officinalis care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of sanguisorba officinalis 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 sanguisorba officinalis
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 sanguisorba officinalis — frequently asked questions
What fertiliser does sanguisorba officinalis 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. Sanguisorba officinalis 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 sanguisorba officinalis?
Minimal feeding needed. A spring mulch of compost or one balanced feed supports growth; over-rich conditions can encourage floppy stems, so feed moderately. Minimal feeding needed. A spring mulch of compost or one balanced feed supports growth; over-rich conditions can encourage floppy stems, so feed moderately. 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 sanguisorba officinalis?
Half strength is the safe default for sanguisorba officinalis — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding sanguisorba officinalis 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 sanguisorba officinalis 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 sanguisorba officinalis?
Flush the pot of sanguisorba officinalis 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
- Sanguisorba officinalis care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water sanguisorba officinalis — 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 peace lily
- How to fertilise bird of paradise
- How to fertilise hoya
- All 5561 fertilising guides in the Growli library