Fertilising guide
How to fertilise Lupinus 'Tequila Flame' (Lupinus 'Tequila Flame')— schedule & NPK
Also called Tequila Flame lupin.
More about lupinus 'tequila flame'
About Lupinus 'Tequila Flame'
Lupinus 'Tequila Flame' · also called Tequila Flame lupin · flowering
Lupinus 'Tequila Flame' is a compact West Country lupin with vivid bicolour spikes of red and yellow that mature to flame-orange shades over fresh green palmate foliage. It flowers in early summer, thriving in full sun and cool, moist, well-drained, slightly acidic soil. Sturdy and free-flowering, it reblooms if deadheaded promptly.
Growth habit: Bushy, clump-forming herbaceous perennial of relatively compact, well-branched habit, throwing up sturdy upright flower spikes above a neat mound of palmate leaves.
Watch for — Flopping after rain: Heavy spikes can lean or snap in wind and rain on rich soil. Site in a sheltered spot, avoid over-feeding with nitrogen, and stake tall stems where exposed.
What fertiliser lupinus 'tequila flame' actually wants — and why
Lupinus 'Tequila Flame' is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves.
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 lupinus 'tequila flame': 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 lupinus 'tequila flame', 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 lupinus 'tequila flame':
Feed lightly. Nitrogen-fixing roots supply most of its needs; a single spring application of a balanced or high-potash, low-nitrogen feed supports flowering. Skip rich nitrogen feeds, which cause lush, weak foliage and reduce spike quality and stem strength. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
The dormant-season rule matters more than the exact interval: skip feeding entirely when lupinus 'tequila flame' 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 lupinus 'tequila flame'
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for lupinus 'tequila flame'. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water lupinus 'tequila flame' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the lupinus 'tequila flame' watering schedule.
Signs you are over-feeding lupinus 'tequila flame'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for lupinus 'tequila flame':
- Brown, scorched leaf margins from too strong or too frequent a dose.
- White salt crust on the soil surface.
- Soft, lush growth that fruits or flowers poorly.
Signs you are under-feeding lupinus 'tequila flame'
- Yellowing leaves with green veins (iron chlorosis from high pH).
- Weak growth, poor cropping and an overall pale, stressed look.
- Stunted new shoots in spring despite adequate water and light.
If the symptoms point at watering, light or roots rather than nutrition, the full lupinus 'tequila flame' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush lupinus 'tequila flame' with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Organic vs synthetic feeds for lupinus 'tequila flame'
Organic options
Composted pine bark, pine-needle mulch, used coffee grounds and an organic ericaceous feed gently maintain acidity. UK: Vitax or Westland Ericaceous; US: Espoma Holly-tone or Dr. Earth Acid Lovers. Slow, soil-improving, hard to overdo.
Synthetic / liquid feeds
A liquid or granular ericaceous feed — UK: Miracle-Gro Ericaceous, Vitax or Westland; US: Miracle-Gro Acid-Loving Plant Food or Espoma Holly-tone. Pair with rainwater and an acidic mulch for it to work.
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 lupinus 'tequila flame' — frequently asked questions
What fertiliser does lupinus 'tequila flame' need?
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves. Lupinus 'Tequila Flame' is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
How often should I feed lupinus 'tequila flame'?
Feed lightly. Nitrogen-fixing roots supply most of its needs; a single spring application of a balanced or high-potash, low-nitrogen feed supports flowering. Skip rich nitrogen feeds, which cause lush, weak foliage and reduce spike quality and stem strength. Feed lightly. Nitrogen-fixing roots supply most of its needs; a single spring application of a balanced or high-potash, low-nitrogen feed supports flowering. Skip rich nitrogen feeds, which cause lush, weak foliage and reduce spike quality and stem strength. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
What strength of feed for lupinus 'tequila flame'?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for lupinus 'tequila flame'. The variable that actually matters is pH, not concentration.
What does over-feeding lupinus 'tequila flame' look like?
Brown, scorched leaf margins from too strong or too frequent a dose. White salt crust on the soil surface. Soft, lush growth that fruits or flowers poorly. Feeding lupinus 'tequila flame' an ordinary fertiliser, or growing it in hard tap water / limey soil, is the defining mistake — it triggers lime-induced chlorosis (yellow leaves, green veins) no amount of feeding fixes until the pH comes down.
Should I flush the soil of lupinus 'tequila flame'?
Flush lupinus 'tequila flame' with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Keep reading
- Lupinus 'Tequila Flame' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water lupinus 'tequila flame' — 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 3899 fertilising guides in the Growli library