WAEC SSCE Agricultural Science
Study notes for Methods of cultivating ornamental plants: — part of the WAEC SSCE Agricultural Science syllabus. 1 learning objectives with explanations and exam tips.
Growing ornamental plants from seeds is one of the most cost-effective and rewarding methods for producing decorative plants. This method involves collecting mature seeds from healthy parent plants, preparing them properly, and sowing them in suitable growing media. Seeds must be cleaned, dried, and sometimes treated to improve germination rates before planting.
The process requires well-draining soil mixed with compost, proper moisture levels, and appropriate light conditions depending on the plant species. Popular ornamental plants like marigolds and zinnias are commonly propagated from seeds in Nigeria because they germinate quickly and grow vigorously. Seeds are typically sown in seed trays or nursery beds, then transplanted to permanent locations once seedlings develop true leaves.
This method produces genetically identical plants when using seeds from pure varieties, though some ornamentals with hybrid seeds may show variation. The main advantage is affordability since seeds cost less than buying mature plants.