How to Grow Osteospermum
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Osteospermum
Osteospermum ecklonis
flowerOsteospermum, commonly known as African daisy, is a vibrant flowering plant native to South Africa that produces cheerful, daisy-like blooms in a wide range of colors including purple, pink, orange, yellow, and white. These sun-loving perennials are prized for their long blooming season and ability to thrive in poor soils where many other plants struggle. They are popular ornamental plants for borders, containers, and rock gardens.
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Example Osteospermum timeline · Pittsburgh, PA (Zone 6b)
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Plant Osteospermum
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 Osteospermum blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Osteospermum dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9-11; grown as cool-season annuals in cooler regions
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Get my Osteospermum timeline →Growth Stages
Seedling
2-3 weeksTiny seedlings with two cotyledons emerge and develop their first true leaves
Keep soil barely moist, not wet. Provide bright light. Avoid damping off by ensuring good air circulation.
Vegetative
3-4 weeksPlant develops bushy foliage with narrow, lobed green leaves. No flowers yet.
Pinch back growing tips to encourage bushiness. Water sparingly. Begin hardening off before transplanting.
Budding
2-3 weeksFlower buds form at stem tips; plant becomes increasingly compact and full
Reduce watering slightly. Avoid high-nitrogen fertilizers. Ensure excellent drainage.
Decline/Rest
Variable depending on climateFlowering slows in summer heat or winter cold; plant may appear stressed
In hot climates, provide afternoon shade. In cool climates, move indoors or treat as annual. Minimal water needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; ensure good air circulation
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Increase humidity slightly, spray leaves with water, use miticide if severe
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Spray with water jet or insecticidal soap
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Ensure excellent air circulation, avoid overhead watering, apply sulfur or fungicide if needed
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Improve drainage, reduce watering frequency, repot in fresh dry soil if possible
Uses
Edible Flower Garnish
CulinaryOsteospermum petals are edible and commonly used as colorful garnishes for salads, desserts, and cocktails, adding visual appeal and a slightly tangy flavor. [source]
Cut Flowers & Arrangements
HouseholdLong-lasting cut flowers ideal for vases, bouquets, and floral arrangements; the vibrant blooms last 1-2 weeks when kept cool and fresh water is provided. [source]
Container & Border Displays
HouseholdExcellent ornamental plant for pots, window boxes, hanging baskets, and garden borders; provides continuous color throughout the growing season. [source]
Pollinator Attraction
WildlifeBright flowers attract bees, butterflies, and other pollinators, making it valuable for supporting local ecosystems and beneficial insects. [source]
Traditional Use
MedicinalIn traditional South African medicine, osteospermum has been used in herbal preparations, though modern scientific evidence is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Osteospermum is grown for ornamental blooms rather than harvest. Deadhead spent flowers by pinching off just below the bloom to encourage more flowers. Cut stems for indoor arrangements in the morning when flowers are fresh; they last 1-2 weeks in water.
Fun Facts
- 🌱 Osteospermum flowers exhibit 'nyctinastic' movement, closing their petals at night and reopening them in daylight, which helps protect the developing seeds and extends flower longevity.
- 🌱 The name 'Osteospermum' comes from Greek words meaning 'bone seed' (osteon = bone, spermum = seed), referring to the hard, bony appearance of the seed structures.
- 🌱 African daisies were favorites of Victorian gardeners and remain popular heirloom varieties; some cultivars have been in cultivation for over 150 years.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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