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Fertilising guide

How to fertilise Salvia 'Hot Lips' (Salvia microphylla 'Hot Lips')— schedule & NPK

Also called Baby sage, Hot Lips sage.

More about salvia 'hot lips'

About Salvia 'Hot Lips'

Salvia microphylla 'Hot Lips' · also called Baby sage, Hot Lips sage · flowering

Salvia 'Hot Lips' is a shrubby baby sage covered for months in bicolour red-and-white flowers that shift colour with temperature. Aromatic, drought-tolerant, and adored by bees and hummingbirds, it forms a small woody bush in mild climates. No Salvia appears on the ASPCA toxic list.

Growth habit: Bushy, woody-based shrub (sub-shrub) with many slender branching stems and small aromatic leaves; in mild areas it forms a rounded evergreen-ish bush, dying back harder where winters are cold.

Watch for — Reduced bloom in shade or rich soil: Too little sun or over-feeding cuts flowering; grow lean and sunny for continuous colour.

What fertiliser salvia 'hot lips' actually wants — and why

Salvia 'Hot Lips' 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 salvia 'hot lips': 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 salvia 'hot lips', 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 salvia 'hot lips':

Light feeder. A spring mulch of compost or a single balanced slow-release feed suffices; rich feeding produces soft, floppy growth and fewer flowers. Treat it lean like other Mediterranean salvias. 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 salvia 'hot lips' 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 salvia 'hot lips'

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

Signs you are over-feeding salvia 'hot lips'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for salvia 'hot lips':

Signs you are under-feeding salvia 'hot lips'

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

Flushing and leaching the salts

Flush the pot of salvia 'hot lips' 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 salvia 'hot lips'

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 salvia 'hot lips' — frequently asked questions

What fertiliser does salvia 'hot lips' 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. Salvia 'Hot Lips' 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 salvia 'hot lips'?

Light feeder. A spring mulch of compost or a single balanced slow-release feed suffices; rich feeding produces soft, floppy growth and fewer flowers. Treat it lean like other Mediterranean salvias. Light feeder. A spring mulch of compost or a single balanced slow-release feed suffices; rich feeding produces soft, floppy growth and fewer flowers. Treat it lean like other Mediterranean salvias. 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 salvia 'hot lips'?

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

What does over-feeding salvia 'hot lips' 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 salvia 'hot lips' 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 salvia 'hot lips'?

Flush the pot of salvia 'hot lips' 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.

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