Prized for their daisy-like blossoms and vivid colour, flowers belonging to the Osteospermum genus are ideal for the home garden, offering great versatility with their growth as perennials or annuals, depending upon the particular species. Commonly referred to as African daisies, Osteospermums need moderate care, and display flowers in a varied palette of purples, whites, roses, yellows, bi-colours, pinks and peaches. With deep green foliage and a height reaching 6 inches to 2 1/2 feet, some cultivar of Osteospermums fits into nearly any garden design.
- Skill level:
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Things you need
- Cutting tool
- Gardening gloves
- Constant liquid feed at a rate of 200 ppm of nitrogen
- 20-10-20 fertiliser
- 15-0-15 fertiliser
Grow osteospermum flowers in locations that provide full sunlight for optimal growth.
Provide well-drained soil with a pH level of 6.0 to 6.2. Apply once-weekly fertiliser to your osteospermums, trading off between 20-10-20 and 15-0-15, according to the North Carolina State University Cooperative Extension Service. Apply a constant liquid feed at a rate of 200 ppm of nitrogen.
Pinch your osteospermum plant to approximately five nodes near the second week of growth with a sharp tool for a clean cut.
Provide nighttime temperature of 7.22 to 12.8 degrees Celsius for up to five weeks just after pinching to establish bud growth.
Deadhead flowers once temperatures increase and osteospermums flower. Deadheading prolongs bloom time.
Grow half-hardy osteospermums in temperatures that remain above 00 degrees Celsius to avoid cold damage.
Examine your osteospermums regularly for pest and disease problems. Look for fungal growths, wilting, discolouration, spots, bug colonies or other abnormalities due to problems like powdery mildew, verticillium wilt, thrips or fungus gnats. Identify the problem if it arises and employ the appropriate control method. Contact your local county extension agent or licensed professional for accurate diagnosis and an appropriate management program.
Tips and warnings
- Always wear gardening gloves to prevent injury when using sharp tools.
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