Growli
Let's go

Fertilising guide

How to fertilise Alpine Liverwort (Erinus alpinus)— schedule & NPK

Also called Alpine liverwort, Fairy foxglove, Alpine balsam, Liver balsam.

More about alpine liverwort

About Alpine Liverwort

Erinus alpinus · also called Alpine liverwort, Fairy foxglove · flowering

Erinus alpinus is a semi-evergreen, rosette-forming alpine perennial native to mountain regions of southwestern Europe and North Africa, from the Pyrenees to the Atlas Mountains, where it colonises rock faces, old walls, and scree. Despite its common name 'fairy foxglove', it belongs to the family Plantaginaceae, not Scrophulariaceae. It produces abundant small, star-shaped flowers in pink, purple, or white over the rosettes from late spring to early summer and self-seeds freely into crevices. The plant is short-lived, typically three to five years, but perpetuates itself readily from seed. Erinus alpinus is not listed by the ASPCA as toxic to cats or dogs.

Growth habit: Semi-evergreen perennial forming small basal rosettes with spreading, self-seeding colonies over time.

What fertiliser alpine liverwort actually wants — and why

Alpine Liverwort 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 alpine liverwort: 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 alpine liverwort, 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 alpine liverwort:

Feeding is largely unnecessary given its preference for low-fertility substrate; a light top-dressing of balanced fertiliser in spring can extend flowering in pot-grown plants. 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 alpine liverwort 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 alpine liverwort

Half strength is the safe default for alpine liverwort — 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 alpine liverwort first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the alpine liverwort watering schedule.

Signs you are over-feeding alpine liverwort

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for alpine liverwort:

Signs you are under-feeding alpine liverwort

If the symptoms point at watering, light or roots rather than nutrition, the full alpine liverwort care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of alpine liverwort 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 alpine liverwort

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 alpine liverwort — frequently asked questions

What fertiliser does alpine liverwort 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. Alpine Liverwort 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 alpine liverwort?

Feeding is largely unnecessary given its preference for low-fertility substrate; a light top-dressing of balanced fertiliser in spring can extend flowering in pot-grown plants. Feeding is largely unnecessary given its preference for low-fertility substrate; a light top-dressing of balanced fertiliser in spring can extend flowering in pot-grown plants. 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 alpine liverwort?

Half strength is the safe default for alpine liverwort — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding alpine liverwort 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 alpine liverwort 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 alpine liverwort?

Flush the pot of alpine liverwort 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