Sea Chamomile Care (Anthemis maritima)

This coastal perennial thrives in bright, open sites with plenty of sun exposure.

• Provide 6–8 hours of direct sun daily; full sun promotes compact growth and abundant flowers in Sea Chamomile.
• Tolerates light afternoon shade, especially in hotter regions, but flowering will decrease in sites receiving less than 4–5 hours of direct sun.
• In winter, avoid deep shade from buildings or shrubs; in very hot summers, slight midday filtering reduces leaf scorch while keeping strong morning sun.

This species prefers drier conditions and is adapted to sandy, fast-draining coastal soils.

• Allow the top 3–5 cm of soil to dry before watering; the plant should never sit in waterlogged ground.
• During active growth, water thoroughly but infrequently, then let excess drain away; reduce watering in cool or rainy seasons to prevent root rot in Anthemis maritima.
• Signs of overwatering include limp, yellowing foliage and blackened stem bases, while crisp, browning leaf tips and drooping stems usually indicate prolonged drought.

This Mediterranean coastal plant handles a wide temperature range but dislikes prolonged hard frost.

• Optimal growth occurs around 60–75°F (16–24°C), with flowering best in mild, sunny conditions and moderate humidity.
• Established plants usually tolerate short dips to about 20–25°F (-6 to -4°C), but repeated freezes below this can damage crowns and roots.
• In summer, plants cope with 85–95°F (29–35°C) if soil is well drained and not waterlogged; extended heat above this may reduce flowering and stress foliage.

This coastal species handles typical indoor humidity and does not need special humidity management.

• Target 30–50% humidity, similar to most heated or air-conditioned homes.
• Dry air is usually tolerated, but prolonged exposure near heating vents may cause leaf tip browning and reduced flowering.
• If air is extremely dry, briefly group Sea Chamomile with other plants away from drafts rather than misting leaves.

This species prefers light, fast-draining soil that mimics sandy coastal conditions.

• Use a sandy or gritty mix, such as 50–60% coarse sand or grit with 40–50% loam-based potting mix, to keep roots aerated.
• Ensure very sharp drainage; water should pass through within seconds and not leave the mix soggy.
• Aim for slightly alkaline to neutral pH around 7.0–7.8, which suits Anthemis maritima and supports strong growth.
• Avoid dense, clay-heavy, or peat-heavy substrates; lighten any compact mix with extra coarse sand or fine gravel to improve structure.

This species adapts well to container growing in sunny outdoor locations.

• Select a low, wide container so the spreading root system anchors the plant and the top growth does not make the pot unstable in wind.
• Choose terracotta or other porous materials to allow faster moisture loss, preventing the constantly wet conditions that encourage root problems.
• Raise the pot on feet or bricks so drainage holes clear quickly after rain and salty residues from tap water do not accumulate around the base.

This coastal perennial grows best with light feeding in poor to moderately fertile soils.

• Use a balanced, low-strength liquid fertilizer (for example 10-10-10 at 1/2–1/4 label strength) for Sea Chamomile in containers.
• Feed every 4–6 weeks during the main growing season if growth looks pale or weak.
• Apply a thin layer of compost around in-ground plants in spring instead of frequent liquid feeding.
• Stop feeding in late summer and avoid fertilizing in winter dormancy.

Anthemis maritima responds well to light pruning that maintains compact growth and sustained flowering.

• Use clean hand pruners or scissors to remove dead, damaged, or diseased stems whenever noticed.
• Shear back spent flower stems by 1/3 after the main bloom to encourage rebloom and denser growth.
• In late winter or very early spring, lightly trim leggy or tangled shoots to refine shape.
• Avoid cutting into old, woody bases; focus on green, active growth for best recovery.

This species is more often transplanted in the garden than repotted long-term in containers.

• Transplant in early spring or early fall, when temperatures are mild and soil is workable.
• Move plants if growth is stunted, roots circle the pot, or soil dries out very quickly.
• Lift with a wide root ball, disturb roots as little as possible, and replant at the same depth in well-drained soil.
• Water thoroughly after planting, then keep soil lightly moist until new growth shows reduced transplant stress.

Anthemis maritima is commonly propagated by seed, division, or soft cuttings.

• Sow seeds in spring on the surface of well-drained mix, keeping them lightly covered and at 60–70°F.
• Divide mature clumps in early spring, retaining several shoots and roots on each section.
• Take 5–8 cm softwood cuttings in late spring, using a gritty, free-draining medium and high light without direct midday sun.
• Maintain even moisture and good airflow to limit rot while roots or new shoots establish.

This coastal plant is fairly cold tolerant in mild climates and usually needs minimal winter care.

• In-ground plants in frost-free or light-frost areas typically overwinter without protection.
• In colder regions, apply a light, dry mulch around the root zone to moderate soil temperature.
• Container plants in regions below about 20°F should be moved to a bright, cool, frost-free spot for winter.