Garden flowers

Pinks

DianthusCaryophyllaceae
Also: Garden pinks, Dianthus, Sweet william, Carnations, Perpetual-flowering carnation, Florist carnation
Garden pinksSweet william

Garden pinks

Avoid rich, moisture-retentive soil at planting — this genus thrives on relative neglect once established. This is the hardy border type; a florist-style perpetual-flowering carnation is the separate `perpetual_carnation` group below, which needs an almost opposite regime.

Full sun Water: little H6down to −20 °C 20–40 cm tall · 30–40 cm wide In a pot: yes
Flowering · UK
Flowering · Northern Italy
Flowering · Central Italy
Flowering · Southern Italy and islands

Care

Light

Full sun.

Water

Drought-tolerant, dislikes wet winter soil.

Soil

Free-draining, neutral to alkaline soil; good on chalky ground, add grit on heavy clay.

Pruning

Trim lightly after flowering to keep compact; avoid cutting into old woody growth.

Feeding

A light, low-nitrogen feed as growth starts and again after the first flush. These want a lean, gritty, alkaline soil — rich feeding gives lax growth and the open, bare-centred mat that never really recovers.

Propagation

Take pipings in early summer: hold a non-flowering shoot and pull the tip out at a node, so it comes away cleanly, then push it into gritty compost. It is the simplest cutting in gardening and needs no knife.

Month by month

Months change with the climate: in southern Italy tomatoes go out two months earlier than in England.

  1. MarchTake cuttings ('pipings') to refresh older plants, which get woody after a few years. how ›
  2. JuneDeadhead to prolong flowering. how ›
  3. AugustLight trim after the main flowering flush to keep compact. how ›

Months based on climate: UK. Your choice stays on this device.

  1. MarchTake cuttings ('pipings') to refresh older plants, which get woody after a few years. how ›
  2. JuneDeadhead to prolong flowering. how ›
  3. AugustLight trim after the main flowering flush to keep compact. how ›

Months based on climate: Northern Italy. Your choice stays on this device.

  1. FebruaryTake cuttings ('pipings') to refresh older plants, which get woody after a few years. how ›
  2. MayDeadhead to prolong flowering. how ›
  3. AugustLight trim after the main flowering flush to keep compact. how ›

Months based on climate: Central Italy. Your choice stays on this device.

  1. FebruaryTake cuttings ('pipings') to refresh older plants, which get woody after a few years. how ›
  2. MayDeadhead to prolong flowering. how ›
  3. AugustLight trim after the main flowering flush to keep compact. how ›

Months based on climate: Southern Italy and islands. Your choice stays on this device.

Common problems

How to spot it. Orange pustules on leaves.

What to do. Remove affected foliage, improve airflow.

Root rot

How to spot it. In wet winter soil.

What to do. Improve drainage.

How to spot it. Clustered on new growth.

What to do. Encourage predators.

CarnationsPerpetual-flowering carnation, Florist carnation

Carnations

Needs a fundamentally different regime from border pinks — regular feed and water, staking, disbudding, and frost-free winter protection. Treating it like a hardy border pink (dry, neglected, left outside) will kill it over winter.

Full sun Water: average H2down to 1 °C 60 cm–1 m tall · 30–40 cm wide In a pot: yes
Flowering · UK
Flowering · Northern Italy
Flowering · Central Italy
Flowering · Southern Italy and islands

Care

Light

Bright and sunny — grown under glass (greenhouse or conservatory) in most UK gardens rather than planted straight into a border.

Water

Grown far more intensively than border pinks — keep compost consistently moist; unlike the drought-tolerant border type, this group dislikes drying out.

Soil

Free-draining, fertile, peat-free compost in pots or a greenhouse border; benefits from a regular balanced feed through the growing season.

Pruning

Pinch out (stop) young plants to encourage bushy growth, stake flowering stems as they lengthen, and disbud the side buds on each stem — leaving only the terminal bud — for the classic single large carnation bloom.

Feeding

Grown under glass for continuous flowering, so it is fed accordingly: a balanced liquid feed every couple of weeks through the growing season, leaning towards high potash while buds are forming.

Propagation

Cuttings from short non-flowering side-shoots in late winter, pulled from the middle of the stem and rooted in gritty compost with gentle warmth. Stock is best renewed every two or three years — old plants get leggy and flower poorly.

Month by month

Months change with the climate: in southern Italy tomatoes go out two months earlier than in England.

  1. MarchPinch out (stop) young plants to encourage branching and more flowering stems. how ›
  2. MayStake flowering stems as they lengthen — this group has weaker stems than border pinks. how ›
  3. JuneDisbud side shoots, leaving one terminal bud per stem, for large single blooms.
  4. OctoberKeep under glass and frost-free over winter — this group won't reliably survive a UK winter outdoors. how ›

Months based on climate: UK. Your choice stays on this device.

  1. MarchPinch out (stop) young plants to encourage branching and more flowering stems. how ›
  2. MayStake flowering stems as they lengthen — this group has weaker stems than border pinks. how ›
  3. JuneDisbud side shoots, leaving one terminal bud per stem, for large single blooms.
  4. OctoberKeep under glass and frost-free over winter — this group won't reliably survive a UK winter outdoors. how ›

Months based on climate: Northern Italy. Your choice stays on this device.

  1. FebruaryPinch out (stop) young plants to encourage branching and more flowering stems. how ›
  2. AprilStake flowering stems as they lengthen — this group has weaker stems than border pinks. how ›
  3. MayDisbud side shoots, leaving one terminal bud per stem, for large single blooms.
  4. NovemberKeep under glass and frost-free over winter — this group won't reliably survive a UK winter outdoors. how ›

Months based on climate: Central Italy. Your choice stays on this device.

  1. FebruaryPinch out (stop) young plants to encourage branching and more flowering stems. how ›
  2. AprilStake flowering stems as they lengthen — this group has weaker stems than border pinks. how ›
  3. MayDisbud side shoots, leaving one terminal bud per stem, for large single blooms.
  4. NovemberKeep under glass and frost-free over winter — this group won't reliably survive a UK winter outdoors. how ›

Months based on climate: Southern Italy and islands. Your choice stays on this device.

Common problems

Grey mould (Botrytis)full sheet ›

How to spot it. Fuzzy grey mould on flowers and stems in humid, poorly ventilated conditions under glass.

What to do. Improve ventilation, remove affected material promptly.

Red spider mitefull sheet ›

How to spot it. Fine leaf mottling and fine webbing, worse in hot, dry glasshouse conditions.

What to do. Raise humidity, treat if noticed.

Frost death if left outside

How to spot it. Sudden collapse after a cold snap.

What to do. Keep this group under cover through winter, unlike hardy border pinks.

Popular varieties

Dianthus ‘Doris’AGM30–40 cm × 30 cm · June–SeptemberJune–SeptemberMay–SeptemberMay–September · Garden pinks
Dianthus ‘Mrs Sinkins’30 cm × 30 cm · June–JulyJune–JulyMay–JulyMay–July · Garden pinks

Questions

Pinks: is it hardy?

Garden pinks: H6: Hardy in the vast majority of UK gardens. It survives down to −20 °C. Carnations: H2: Tender. It survives down to 1 °C.

Can it grow in a pot?

Garden pinks: Does very well in pots and troughs with sharp drainage. Carnations: Essentially always grown in pots or a greenhouse border in the UK climate.

Pinks: when do you prune it?

Garden pinks: Trim lightly after flowering to keep compact; avoid cutting into old woody growth. In the calendar for UK, pruning falls in August. Carnations: Pinch out (stop) young plants to encourage bushy growth, stake flowering stems as they lengthen, and disbud the side buds on each stem — leaving only the terminal bud — for the classic single large carnation bloom.

Pinks: when does it flower?

Garden pinks: In the climate of UK it flowers in June–August. Carnations: In the climate of UK it flowers in April–October.

When do you feed it?

Garden pinks: A light, low-nitrogen feed as growth starts and again after the first flush. These want a lean, gritty, alkaline soil — rich feeding gives lax growth and the open, bare-centred mat that never really recovers. Feeding months, UK: April, June. Carnations: Grown under glass for continuous flowering, so it is fed accordingly: a balanced liquid feed every couple of weeks through the growing season, leaning towards high potash while buds are forming. Feeding months, UK: April–August.