Fertilising guide
How to fertilise Solanum laxum 'Album' (Solanum laxum 'Album')— schedule & NPK
Also called white-flowered potato vine, jasmine nightshade.
More about solanum laxum 'album'
About Solanum laxum 'Album'
Solanum laxum 'Album' · also called white-flowered potato vine, jasmine nightshade · flowering
The pure-white form of potato vine, 'Album' is a vigorous semi-evergreen climber smothered from summer to autumn in loose clusters of starry white flowers with golden centres. It scrambles through trellis and wires on warm, sheltered walls, giving a long, luminous display. Frost-tender and a nightshade-family member, it rewards a sunny, well-drained spot in milder gardens.
Growth habit: Vigorous, semi-evergreen to evergreen scrambling climber that twines and leans through supports rather than self-clinging, so it requires tying in. Fast-growing with a lax habit, it performs best on a framework of wires or trellis with spring pruning to keep it neat.
Watch for — Shy flowering: Too much shade or excessive nitrogen reduces bloom; give full sun and a high-potassium feed to maximise the white display.
What fertiliser solanum laxum 'album' actually wants — and why
Solanum laxum 'Album' 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 solanum laxum 'album': 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 solanum laxum 'album', 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 solanum laxum 'album':
Apply a balanced feed in spring, then a high-potassium (tomato-type) feed every 2-4 weeks in summer to support its long bloom season. Stop in autumn; overwintering plants need little feeding until growth restarts. Treat that as every 2-4 weeks 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 solanum laxum 'album' 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 solanum laxum 'album'
Half strength is the safe default for solanum laxum 'album' — 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 solanum laxum 'album' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the solanum laxum 'album' watering schedule.
Signs you are over-feeding solanum laxum 'album'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for solanum laxum 'album':
- 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 solanum laxum 'album'
- 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 solanum laxum 'album' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of solanum laxum 'album' 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 solanum laxum 'album'
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 solanum laxum 'album' — frequently asked questions
What fertiliser does solanum laxum 'album' 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. Solanum laxum 'Album' 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 solanum laxum 'album'?
Apply a balanced feed in spring, then a high-potassium (tomato-type) feed every 2-4 weeks in summer to support its long bloom season. Stop in autumn; overwintering plants need little feeding until growth restarts. Apply a balanced feed in spring, then a high-potassium (tomato-type) feed every 2-4 weeks in summer to support its long bloom season. Stop in autumn; overwintering plants need little feeding until growth restarts. Treat that as every 2-4 weeks 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 solanum laxum 'album'?
Half strength is the safe default for solanum laxum 'album' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding solanum laxum 'album' 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 solanum laxum 'album' 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 solanum laxum 'album'?
Flush the pot of solanum laxum 'album' 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
- Solanum laxum 'Album' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water solanum laxum 'album' — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
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- How to fertilise bird of paradise
- How to fertilise hoya
- All 5561 fertilising guides in the Growli library