How to grow gladiolus so it keeps blooming

Gladiolus, also called sword lily, is a flower of the Iridaceae family. It blooms beautifully and is one of the world-famous four major cut flowers. Gladiolus blooms from July to September. Blooming requires a warm environment. Long daylight favors flower bud differentiation, but short daylight can promote earlier blooming. It likes fertilizer; phosphorus fertilizer improves bloom quality. How gladiolus can bloom continuously may be achieved through a certain artificial technique. Then let's take a look!

1. Variety pairing

There are generally two major groups of varieties, spring-flowering and summer-flowering, but there are varieties with different maturity and blooming times. If you want flowers in all four seasons, you can use early-maturing varieties, mid-maturing varieties, and late-maturing varieties. After planting them all, there can be flowers in every season. In winter they can be grown in a greenhouse and will bloom as well.

2. Earlier blooming

If there is a blank period with no blooming, you can place the corms in a temperature environment between 0 degrees and 4 degrees, and after about a month the dormancy will be broken. In sufficient sunlight they bloom earlier, so you can adjust light and temperature to regulate the blooming time and make them bloom earlier. Soaking the corms in 39-degree hot water for two weeks can also break dormancy.

3. Delaying blooming

Blooming can also be delayed. Delaying requires storage in a low-temperature, dry environment; promoting dormancy can delay blooming. In low temperature and dry conditions, the corms enter a dormant state and will not bloom. You only need to increase temperature and humidity at the time you want them to bloom, and the dormancy will be broken and they will open as well. In fact, it is inhibiting blooming.

4. Controlling blooming

Gladiolus likes long daylight and a sunny environment. In such an environment, plus warm temperatures, it blooms relatively early, so properly adjusting temperature and light will change the blooming time. But the premise is that there must be an environment you can change, such as greenhouse insulation, greenhouse heating, and shade-grown planting. Humidity regulation can also change the blooming time.

If gladiolus is to provide cut flowers for harvest in all four seasons, you can plant a mix of varieties with different blooming times, and you can also artificially change environmental factors to regulate the specific blooming time.