You can definitely cut back Osteospermum plants if they have become tall and leggy. This is a common problem with these plants, especially if they have been grown in low light conditions or if they have not been pruned regularly.
The best time to cut back Osteospermum is in early spring, just after winter. This is when the plants are starting to come out of their dormant period and new growth is beginning to emerge. By pruning at this time, you are encouraging the plant to produce new, compact growth and promote a bushier habit.
To cut back Osteospermum, you will need a pair of sharp pruning shears or scissors. Begin by removing all the stems to a height of about 3-4 inches or 7-8 cm above the base of the plant. This may seem drastic, but it will help to rejuvenate the plant and stimulate new growth.
When pruning, make sure to cut just above a leaf node or bud. This will encourage new shoots to develop from the node and result in a fuller, more compact plant. Avoid cutting too close to the base of the plant, as this can weaken it and make it more susceptible to disease and pests.
After pruning, you can also remove any dead or damaged foliage to improve the overall appearance of the plant. This will also help to promote better air circulation and reduce the risk of fungal diseases.
Once you have finished pruning, it’s important to provide the Osteospermum with the proper care to ensure its healthy regrowth. Place the plant in a location with bright, indirect sunlight and water it regularly, allowing the soil to dry slightly between waterings. You can also fertilize the plant with a balanced, water-soluble fertilizer every few weeks during the growing season to promote vigorous growth.
Cutting back Osteospermum is a simple and effective way to rejuvenate the plants and promote a more compact and bushy habit. By following the steps mentioned above and providing the plant with proper care, you can enjoy healthy and vibrant Osteospermum blooms throughout the growing season.