To prepare the ground, dig a trench 12 inches (30 cm).

Planting gladiolus bulbs in pots. You will also need to ensure that the pot has. Some species and cultivars are hardy, others need. Miniature gladiolus can be grown in pots or planted directly in the ground.

How to plant gladiolus bulbs. A ph between 6 and 7, which can be easily monitored with a ph kit, is preferred. A wide, stable pot is best, suggests pyracantha.co.uk.

Plant gladiolus flower bulbs about 4 inches deep (10 cm) in the soil with the flat side down. Gladiolus can also be started early in soil. They need to be planted about six inches deep and have plenty of room below for the roots.

Incorporate some compost or aged manure before planting to retain moisture and to improve the soil. Gladiolus corms should be planted in the spring, two weeks before the last estimated frost date. A good rule of thumb is to plant.

Plant your glads every two weeks until early july to enjoy blooming throughout the season. If you're planting bulbs that require a shallower planting depth, fill the pot with. The taller, the better, as the corms need suitable drainage.

Gladioli don’t like wet feet. Be sure to use a large pot for the bulb to reach its full size. Larger bulbs like glads, will need a fairly deep pot.