Table of Contents
Gladiolus are popular flowering plants known for their tall, vibrant spikes of flowers that bloom in the summer. Properly dividing and preparing gladiolus bulbs in the spring ensures healthy growth and abundant blooms throughout the season.
Understanding Gladiolus Growth Cycle
Gladiolus grow from corms, which are underground storage organs. After flowering, these corms produce offsets or “bulblets” that can be separated and replanted. Dividing these corms in early spring promotes vigorous growth and prevents overcrowding.
When to Divide Gladiolus
The ideal time to divide gladiolus is in early spring, just as new shoots begin to emerge but before the plant enters its active growing phase. This timing allows the corms to establish roots and prepare for flowering season.
Tools Needed for Dividing
- Sharp garden knife or pruning shears
- Garden gloves
- Clean bucket or container
- Rooting hormone (optional)
- Well-draining soil or potting mix
Step-by-Step Division Process
Follow these steps to divide your gladiolus corms effectively:
- Carefully dig around the gladiolus clump using a garden fork or shovel.
- Gently lift the clump from the soil, avoiding damage to the corms.
- Brush off excess soil to expose the corms and their offsets.
- Use a sharp knife or shears to separate healthy corms from the main clump, ensuring each has some roots attached.
- If desired, dip the cut surfaces in rooting hormone to encourage healing and growth.
- Allow the divided corms to dry for a day or two in a cool, shaded area.
- Plant the corms about 4-6 inches deep in well-draining soil, spacing them 4-6 inches apart.
Caring for Divided Gladiolus
After planting, water the corms thoroughly and maintain consistent moisture levels. Apply a balanced fertilizer to promote healthy growth. Mulching helps retain soil moisture and suppress weeds.
Additional Tips for Successful Division
- Always use clean tools to prevent disease transmission.
- Remove any damaged or diseased corms during division.
- Label new plantings to monitor growth and flowering times.
- Divide every 3-4 years to maintain plant vigor.
Conclusion
Dividing gladiolus in early spring is a simple yet effective way to rejuvenate your garden and ensure vibrant blooms year after year. With proper tools and techniques, you can expand your gladiolus collection and enjoy stunning floral displays each summer.