To keep gladiolus blooming all summer, there are several key steps you can take to ensure their continuous growth and vibrant flowers. These steps involve proper planting, maintenance, and care throughout the season. Let’s dive into the details:
1. Selecting and planting healthy corms: When choosing gladiolus corms, make sure they are firm and free from any signs of damage or disease. Larger corms tend to produce bigger and stronger flowers. Plant the corms in well-draining soil, preferably enriched with organic matter, in a location that receives full sun.
2. Timing of planting: Gladiolus corms are typically planted in spring, after the danger of frost has passed and the soil has warmed up. In cooler regions, you can start the corms indoors a few weeks before the last frost date and transplant them once the weather permits.
3. Proper spacing: When planting gladiolus corms, space them 4-6 inches apart and plant them about 4-6 inches deep. This allows enough room for the plants to grow and reduces competition for nutrients and moisture.
4. Watering and moisture: Gladiolus plants require regular watering, especially during dry spells. Water them deeply once or twice a week, ensuring the soil is evenly moist but not waterlogged. Mulching around the plants can help retain moisture and regulate soil temperature.
5. Fertilizing: To promote continuous blooming, feed the gladiolus plants with a balanced fertilizer every 2-3 weeks during the growing season. Use a fertilizer specifically formulated for flowering bulbs or a general-purpose fertilizer with equal nitrogen (N), phosphorus (P), and potassium (K) ratios.
6. Deadheading spent flowers: As the gladiolus blooms fade, it’s essential to remove the spent flowers promptly. Deadheading not only keeps the plants tidy but also encourages the production of new flowers. Cut the flower stalk at the base, taking care not to damage the foliage or emerging blooms.
7. Supporting tall stalks: Some gladiolus varieties can grow quite tall and may require support to prevent bending or breaking. Install stakes or trellises near the plants at the time of planting, and tie the stalks loosely to them as they grow. This helps maintain an upright posture and prevents damage from wind or rain.
8. Pest and disease control: Gladiolus plants can be susceptible to certain pests and diseases, including thrips, aphids, and fungal infections. Regularly inspect the plants for any signs of infestation or disease, and take appropriate measures to control them. Insecticidal soaps or horticultural oils can be used for pest control, while ensuring good air circulation and avoiding overhead watering can help prevent fungal issues.
9. Overwintering: In regions with cold winters, gladiolus corms need to be lifted and stored for the winter to protect them from frost damage. After the foliage has turned yellow and dried up in the fall, carefully dig up the corms, remove any excess soil, and allow them to dry completely. Store the corms in a cool, dry place, preferably in mesh bags or containers with good ventilation, until it’s time to replant them in spring.
By following these guidelines, you can help ensure that your gladiolus plants continue to bloom and bring color to your garden throughout the summer. Remember to plan for successive plantings each year to maintain a continuous display of these beautiful flowers.
