How to Grow Sea Oxeye Daisy
iNaturalist
Sea Oxeye Daisy
Borrichia frutescens
flowerSea oxeye daisy is a woody perennial subshrub native to coastal salt marshes and maritime environments. It produces cheerful bright yellow daisy-like flowers on silvery-green, succulent foliage. This extremely salt-tolerant plant thrives in harsh coastal conditions where few other ornamentals can survive.
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Example Sea Oxeye Daisy timeline · Pittsburgh, PA (Zone 6b)
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Plant Sea Oxeye Daisy
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Sea Oxeye Daisy blooms
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Sea Oxeye Daisy dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8-10, hardy to zone 7b with winter protection
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Seedling
3-4 weeksSmall plants with emerging true leaves; silvery-green foliage becomes visible early
Keep soil lightly moist but not waterlogged. Provide bright light. Avoid overwatering which causes damping-off.
Vegetative Growth
6-8 weeksPlant develops woody stems and accumulates silvery-green succulent foliage; bushy form emerges
Allow soil to dry between waterings. Pinch back stems to encourage branching and bushier growth. Minimal fertilizing needed.
Flowering
8-12 weeks (spring through early fall in cooler zones; extended in warm climates)Bright yellow daisy-like flowers appear at stem tips; flowers typically 1-1.5 inches in diameter
Continue moderate watering; don't overwater flowering plants. Deadhead spent flowers to encourage continued blooming through the season.
Mature Plant
Year-round (perennial)Fully established shrub form (typically 2-3 feet tall and wide) with continuous or abundant flowering
Minimal maintenance required. Light pruning in early spring to shape and maintain size. Very salt tolerant if near coast. Essentially drought tolerant once established.
Winter Dormancy
2-4 months (December-February in northern range)Growth slows or stops in colder zones; foliage persists but flowering ceases; may lose leaves in zone 7b
Reduce watering significantly. In zone 7b, provide mulch around base for insulation. No winter fertilizing needed. In zones 8+, minimal winter care.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream; apply neem oil or miticide if severe; improve air circulation
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Use yellow sticky traps; spray with insecticidal soap; encourage natural predators
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Spray with water; apply neem oil or insecticidal soap; attract beneficial insects
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Prune out heavily infested stems; apply horticultural oil in dormancy; spot treat with neem oil
Uses
Edible flowers
CulinaryThe bright yellow flowers are edible with a slightly bitter, peppery taste. They can be used as a garnish for salads or as a colorful addition to floral arrangements for special occasions. [source]
Ornamental landscaping
HouseholdExceptional choice for coastal gardens, xeriscaping, salt-spray areas, and low-maintenance landscapes. The silvery-green foliage and cheerful yellow flowers provide year-round visual interest in challenging environments. [source]
Pollinator support
WildlifeAttracts bees, butterflies, and other beneficial insects. The abundant flowers provide nectar and pollen sources, especially valuable for coastal pollinator populations. [source]
Traditional remedies
MedicinalUsed in coastal folk medicine traditions for various ailments, though scientific validation is limited. Often prepared as a tea or poultice in traditional coastal communities. [source]
Cut and dried flowers
CraftFlowers dry well for dried arrangements and craft projects. The silvery foliage also dries nicely and can be used in dried floral designs and wreaths. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Sea oxeye daisy is grown as an ornamental for flowers and foliage rather than harvest. Cut flowers for arrangements in the morning when stems are well-hydrated. Deadhead regularly (remove spent flower heads) to encourage continuous blooming throughout the growing season. Cut back lightly in early spring to maintain shape and promote bushiness.
Fun Facts
- 🌱 Sea oxeye daisy is one of the most salt-tolerant ornamental plants available, capable of thriving in pure salt marsh environments where most plants cannot survive.
- 🌱 The plant's name 'Borrichia' honors the succulent nature of its foliage—the leaves store water, making it extremely drought tolerant once established, a trait shared with other xerophytic plants.
- 🌱 Native to the Atlantic and Gulf coasts of North America, this species plays an ecological role in coastal salt marsh stabilization and provides essential habitat for coastal wildlife.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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