Propagating Convolvulus prostratus: Sharing the Charm of the Dwarf Morning Glory
Convolvulus prostratus, commonly known as the dwarf morning glory or trailing glory, is a beloved groundcover prized for its cascading habit and vibrant, trumpet-shaped flowers. Its low-growing nature and tolerance for drought make it a popular choice for rock gardens, hanging baskets, and spilling over walls. While its ease of maintenance contributes to its widespread appeal, propagating this charming plant presents some unique challenges and rewards.
Seed Germination:
Currently, there are no known reliable methods for seed germination propagation of Convolvulus prostratus. While some seed may be produced, germination rates are extremely low and unpredictable, making this a largely impractical method for propagation. Attempts at scarification or stratification have not yielded consistent results.
Cuttings:
This is the most successful and commonly employed method for propagating Convolvulus prostratus.
Challenges: The success rate can be influenced by the timing of the cuttings (preferably taken from actively growing stems in spring or summer) and environmental conditions. Using rooting hormone significantly improves the chances of success.
Practical Tips: Take semi-hardwood cuttings, approximately 4-6 inches long, removing lower leaves to prevent rotting. Dip the cut ends in rooting hormone and plant them in a well-draining propagation mix (e.g., perlite and peat moss). Maintain consistently moist but not soggy conditions, providing bright, indirect light. A humidity dome or propagator can significantly improve success rates.
Rewards: High success rates, relatively quick propagation, maintains the genetic characteristics of the parent plant.
Division:
Division is another viable option, particularly for established plants.
Challenges: This method is limited by the size and age of the parent plant. Overly aggressive division can damage the plant and reduce the chances of successful establishment.
Practical Tips: Carefully divide the root ball in the spring or autumn when the plant is actively growing or dormant but not stressed by extreme heat or cold. Ensure each division contains healthy roots and several stems. Plant them in prepared soil with similar growing conditions as the parent plant.
Rewards: Relatively straightforward method for established plants, provides multiple plants quickly.
Tissue Culture:
Tissue culture propagation of Convolvulus prostratus is relatively unexplored.
Challenges: Establishing a reliable protocol for Convolvulus prostratus would require significant experimentation and expertise in plant tissue culture techniques. This method is typically reserved for large-scale commercial propagation or specific research purposes.
Practical Tips: This method is not readily accessible to the average gardener and requires specialized equipment, sterile conditions, and knowledge of plant tissue culture techniques.
Rewards: Potential for mass propagation, the elimination of diseases, and the preservation of rare or valuable cultivars. However, this method is not practical for home gardeners.
Conclusion:
Propagating Convolvulus prostratus presents a unique balance of challenges and rewards. While seed germination is unreliable, cuttings and division offer practical and rewarding methods for the home gardener. The effort required to successfully propagate this delightful plant, particularly through cuttings, translates into a deep sense of accomplishment. The vibrant flowers that ultimately reward your patience are a testament to your horticultural skill. Don’t be discouraged by initial setbacks; experiment with these methods, paying close attention to detail, and you’ll soon be enjoying the prolific beauty of your own propagated dwarf morning glories. Remember to always prioritize providing well-draining soil and bright, indirect light for optimal growth.