Sea Thrift Care
Armeria maritima
It likes full-sun areas and very well-drained, sandy or gravelly poor soil. With its tolerance of drought and salt, it is a low-maintenance ground cover ideal for rock and coastal gardens.
Monthly care calendar
Timings are for a temperate Northern Hemisphere climate. In warmer areas tasks start earlier, in colder areas later; in the Southern Hemisphere shift them by six months.
- Fertilizing: Not required, do not fertilize.
- General care: To prevent root rot, make sure water does not collect at the base.
- Pests & diseases: Root rot is the biggest risk; good drainage is critical.
- Pruning: Remove dry leaves that may have been damaged in winter.
- General care: Remove weeds around the plant.
- Pests & diseases: General check.
- Watering: If there is no rainfall and the soil is very dry, water lightly (e.g. 1-2 L/m²).
- General care: This is the best time to propagate by division.
- Pests & diseases: Check the new shoots.
- Watering: As the soil dries out completely, 3-5 L/m² per week.
- Pruning: Encourage new flowering by cutting spent flowers off at the base together with their stalks (deadheading).
- Plant protection: If aphids are seen, spray with water or use soapy water made with Aleppo soap.
- General care: Continue clearing weeds.
- Pests & diseases: Aphids are rarely a problem.
- Watering: About 5 L/m² once a week.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: Drainage is vital for this plant. In heavy, water-retaining soil, plant on a mound or bed raised 20-30 cm, and keep the root collar above the surrounding soil level.
- Pests & diseases: General check.
- Watering: In a long drought, water deeply once a month.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: Observe whether the plant goes into stress in hot weather.
- Pests & diseases: Plants may become stressed during extreme heat, but they are usually tolerant.
- Watering: In midsummer, deep watering every 15-20 days is enough. Established plants (over 2 years old) do not need watering in most years. Water so that the soil is wetted to a depth of 10-15 cm from the surface.
- Fertilizing: Never apply fertilizer.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: During this period the plant may go into dormancy.
- Pests & diseases: Can be checked for spider mites, but they are rarely seen.
- Watering: In midsummer, deep watering every 15-20 days is enough. Established plants (over 2 years old) do not need watering in most years. Water so that the soil is wetted to a depth of 10-15 cm from the surface.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: Only observe.
- Pests & diseases: Take care that the root zone does not overheat.
- Watering: In a long drought, water deeply once a month.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: A suitable month for new planting or relocating.
- Pests & diseases: Check drainage against the risk of root rot with the autumn rains.
- Watering: Usually rainfall is sufficient.
- General care: If the centers of the plant's cushions have started to die out, plan to divide it next spring.
- Pests & diseases: Clear fallen leaves from around the plant.
- General care: In winter rains, make sure water does not pool in the root zone; for this plant, drainage is more critical than irrigation.
- Pests & diseases: General check.
- General care: Observation only.
- Pests & diseases: Make sure drainage works well during winter rains.
The care advice on this page is general and for information only; it is not professional advice. Plant age, soil and your garden’s microclimate can change the outcome. Plant protection products are mentioned only as general information; they are regulated, and the choice, dose and timing must be decided by a qualified professional under local rules. Consult a landscape architect or agronomist before applying.
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