Fertilising guide
How to fertilise Pelargonium graveolens 'Grey Lady Plymouth' (Pelargonium graveolens 'Grey Lady Plymouth')— schedule & NPK
Also called Grey Lady Plymouth scented geranium, Variegated rose geranium.
More about pelargonium graveolens 'grey lady plymouth'
About Pelargonium graveolens 'Grey Lady Plymouth'
Pelargonium graveolens 'Grey Lady Plymouth' · also called Grey Lady Plymouth scented geranium, Variegated rose geranium · herb
'Grey Lady Plymouth' is a refined rose-scented geranium with finely cut, grey-green leaves edged in creamy-white. The soft variegation makes it more ornamental but slightly less vigorous than the green types. It carries small pale-pink flowers and the same sweet rose fragrance, thriving in full sun, gritty free-draining soil and frost-free conditions.
Growth habit: Bushy, moderately vigorous evergreen subshrub with deeply dissected grey-green, cream-margined leaves; slightly more compact than the plain green rose geraniums and responds well to pinching.
Watch for — Leaf scorch on pale margins: The cream edges burn under intense, magnified heat or sudden full sun. Acclimatise gradually and shade from extreme midday glare.
What fertiliser pelargonium graveolens 'grey lady plymouth' actually wants — and why
Pelargonium graveolens 'Grey Lady Plymouth' is a soft, fast leafy herb that you harvest hard — a modest balanced feed keeps tender growth coming without tipping it into bland or bolting.
A balanced general feed (even N-P-K) at modest strength — enough nitrogen to keep replacing the leaves you pick, but not so much that flavour thins or it bolts to seed.
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 pelargonium graveolens 'grey lady plymouth': 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 pelargonium graveolens 'grey lady plymouth', 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 pelargonium graveolens 'grey lady plymouth':
Feed every 2-4 weeks in spring and summer with a balanced liquid feed; avoid heavy nitrogen, which can wash out the variegation and produce all-green reversions. Stop feeding over winter. In practice: a balanced liquid feed every few weeks through the main growing and harvesting season (spring through early autumn), more often the harder you are picking it.
The dormant-season rule matters more than the exact interval: skip feeding entirely when pelargonium graveolens 'grey lady plymouth' 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 pelargonium graveolens 'grey lady plymouth'
Half strength is a sensible default for pelargonium graveolens 'grey lady plymouth' — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.
Feeding always goes onto already-damp soil, never dry roots — water pelargonium graveolens 'grey lady plymouth' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the pelargonium graveolens 'grey lady plymouth' watering schedule.
Signs you are over-feeding pelargonium graveolens 'grey lady plymouth'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for pelargonium graveolens 'grey lady plymouth':
- Fast, soft, pale growth with diluted, less aromatic flavour.
- Early bolting (running to flower) and a bitter edge.
- Salt crust and scorched tips on container plants.
Signs you are under-feeding pelargonium graveolens 'grey lady plymouth'
- Pale, slow regrowth after cutting and small leaves.
- A tired, stalled plant that cannot keep up with harvesting.
- Yellowing older leaves in a long-spent pot.
If the symptoms point at watering, light or roots rather than nutrition, the full pelargonium graveolens 'grey lady plymouth' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Pot-grown pelargonium graveolens 'grey lady plymouth' builds up feed salts quickly — water until it drains each time and flush the pot with plain water every few weeks, especially on a sunny windowsill.
Organic vs synthetic feeds for pelargonium graveolens 'grey lady plymouth'
Organic options
A diluted seaweed feed or worm-casting tea keeps soft growth coming without overdoing it. UK: dilute seaweed or Westland; US: Espoma Garden-tone or Neptune's Harvest. Gentle, hard to overdo, flavour-friendly.
Synthetic / liquid feeds
A balanced liquid feed at half strength through harvesting — UK: Phostrogen, Baby Bio or Westland; US: Miracle-Gro all-purpose at half strength. Fast regrowth; just do not overdo the nitrogen.
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 pelargonium graveolens 'grey lady plymouth' — frequently asked questions
What fertiliser does pelargonium graveolens 'grey lady plymouth' need?
A balanced general feed (even N-P-K) at modest strength — enough nitrogen to keep replacing the leaves you pick, but not so much that flavour thins or it bolts to seed. Pelargonium graveolens 'Grey Lady Plymouth' is a soft, fast leafy herb that you harvest hard — a modest balanced feed keeps tender growth coming without tipping it into bland or bolting.
How often should I feed pelargonium graveolens 'grey lady plymouth'?
Feed every 2-4 weeks in spring and summer with a balanced liquid feed; avoid heavy nitrogen, which can wash out the variegation and produce all-green reversions. Stop feeding over winter. Feed every 2-4 weeks in spring and summer with a balanced liquid feed; avoid heavy nitrogen, which can wash out the variegation and produce all-green reversions. Stop feeding over winter. In practice: a balanced liquid feed every few weeks through the main growing and harvesting season (spring through early autumn), more often the harder you are picking it.
What strength of feed for pelargonium graveolens 'grey lady plymouth'?
Half strength is a sensible default for pelargonium graveolens 'grey lady plymouth' — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.
What does over-feeding pelargonium graveolens 'grey lady plymouth' look like?
Fast, soft, pale growth with diluted, less aromatic flavour. Early bolting (running to flower) and a bitter edge. Salt crust and scorched tips on container plants. Over-feeding pelargonium graveolens 'grey lady plymouth' with strong nitrogen is the usual mistake — it grows fast and lush but the leaves turn bland and it bolts to flower sooner, ending the useful harvest early.
Should I flush the soil of pelargonium graveolens 'grey lady plymouth'?
Pot-grown pelargonium graveolens 'grey lady plymouth' builds up feed salts quickly — water until it drains each time and flush the pot with plain water every few weeks, especially on a sunny windowsill.
Keep reading
- Pelargonium graveolens 'Grey Lady Plymouth' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water pelargonium graveolens 'grey lady plymouth' — 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 basil
- How to fertilise herb garden
- How to fertilise mint
- All 5561 fertilising guides in the Growli library