Cottage pink vs Sea thrift

Cottage pink and Sea thrift are often considered for the same spot in the garden (flowers, ground cover, pollinator friendly, container). The data below shows where they differ: size, hardiness, care, toxicity and price.

Cottage pink

Dianthus plumarius 30 cm × 50 cm after 10 years

An old cottage garden favourite: its grey, grassy leaves form a dense cushion all year, and in early summer it is covered in fringed, clove-scented…

Perennial

Full sun

from about PLN 15

Sea thrift

Armeria maritima 20 cm × 30 cm after 10 years

A low, dense evergreen cushion of grass-like leaves, topped in late spring by pink or white flower globes on thin stalks. Use it in rock gardens, as…

Perennial

Full sun

from about PLN 7.90

Key differences

Cottage pink grows larger: 30 cm × 50 cm after ten years, against 20 cm × 30 cm for Sea thrift.
Sea thrift tolerates drought better than Cottage pink.
Sea thrift needs less water than Cottage pink.
Sea thrift needs less care than Cottage pink.
Sea thrift is cheaper: about PLN 11 at the size usually planted, against about PLN 15 for Cottage pink.

Which one to choose?

Sea thrift is the better choice if space is tight, you cannot water regularly, you have little time for care or price matters.

Watch out for

Cottage pink

The most common failure is crown rot: in heavy, wet soil that stays damp in winter the cushion browns in patches and dies, so plant it in a gritty, open mix and do not cover it with moisture-holding mulch. It is short-lived, going bare after 3 to 5 years, and has to be renewed from cuttings. It dislikes very hot, humid summers, when flowering stops early. Slugs, aphids, thrips and spider mites can damage it.

Sea thrift

In rich, damp or clay soil, or when overwatered, the centre of the cushion rots and the plant dies. In the hot summers of Central Europe it can also brown from the centre, especially in muggy, wet spells; lean, gritty soil and dividing the clump every two or three years help. Old cushions go bare in the middle on their own. Aphids and slugs are seldom a problem.

The data side by side

Feature	Cottage pink	Sea thrift
Group	Perennial	Perennial
Size after 10 years	30 cm × 50 cm	20 cm × 30 cm
Ultimate size	15–60 cm × 30–60 cm	15–30 cm × 15–30 cm
Growth rate	Medium (uncertain)	Slow
Light	Full sun	Full sun
Soil	Average garden soil, Sandy, Calcareous	Sandy, Average garden soil
Hardiness	down to -40 °C (USDA 3, RHS H7)	down to -34 °C (USDA 4, RHS H7)
Heat tolerance	Medium (uncertain)	Medium
Foliage	Evergreen	Evergreen
Flowering	May–August, pink, white, red	May–July, pink, white
Water need	Medium	Low
Drought tolerance	Medium	High
Maintenance	Medium	Low
Planting distance	30 cm	25 cm
For dogs	Mildly toxic	no data
For cats	Mildly toxic	no data
For children	Mildly toxic (uncertain)	no data
Typical price	approx. PLN 15	approx. PLN 11

Prices are rounded, indicative values. Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor. Data updated: October 17, 2026

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