Gladiolus Flower Germination. If these flowers will be exposed to wind you will definitely want to stake them. Fill a nursery tray with fine potting soil.
Plant your gladiolus corms which are similar to bulbs in the spring after the threat of frost is gone. After 7-10 days sprouts should reach 1-3 cm in height and in the lower part of the bulb should be seen the swollen tubercles of the roots. They like full sun and well-drained soil although need proper watering as the temperature increases.
2 weeks before the last frost date.
This depends on the size of the bulb and the specific variety you are growing. This will ensure you get to enjoy continuous blooms right until the early months of Autumn. Feb 10 2021 When to Plant Gladiolus Bulbs. Dec 15 2020 The best time to plant gladiolus is in Spring once the frost has passed and the soil has warmed up a bit.