When is the best time to plant Allium?

Allium grandiflorum is a bulbous plant that blooms in spring and summer. It is tall, with a plant height of at least 1 meter. Its flowers bloom like big purple balloons and are very beautiful. So when is the best time to plant alliums? Let’s learn more about it below.

When is the best time to plant Allium?

Allium macrocarpon is generally sown in autumn, and the best time for sowing is from mid-September to late October each year. Planting at this time allows the Allium to get the necessary chilling period in the winter, then begin growing in the spring and blooming in the summer.

How to plant Allium grandiflorum?

1. Breeding method

Allium grandiflorum can be propagated by seeds or by division. After the seeds mature in early July, they are collected and dried in the shade, stored at low temperature of 5℃ to 7℃, sown in autumn from September to October, and germinate in March of the following year. It takes about 5 years for the seedlings to bloom. Division propagation is carried out in summer and autumn. Peel off the sub-bulbs around the main bulb and choose sandy loam with low groundwater level, good drainage, loose, breathable, and fertile as the cultivation site. Each mother bulb can be divided into 1 to 3 small bulbs.

2. Planting method

The time for planting bulbs of Allium grandiflorum is in September, with a spacing of 20cm×30cm between rows and plants. After planting Allium grandiflorum, the surface of the hole should be flattened and then watered. There is no need to cover it to protect it from the cold in winter. Wait until the leaves emerge from the soil in March of the following spring, then you can loosen the soil and water it.

3. Water and fertilizer management

Apply liquid fertilizer to allium macrocarpon and water once every 10 to 15 days. Pay attention to tillage, loosening the soil, and weeding. In areas where the air is dry, add a small amount of artificial spraying or shading. The stems and leaves of the Allium macrostemon will wither after flowering. Before the rainy season comes, the bulbs should be dug out early to avoid rotting after the rain. They can be placed in a ventilated and dry place to dry, and then stored in a ventilated place indoors. In addition, Allium giganteum should not be planted continuously, and well-rotted organic fertilizer must be applied. Water must be drained in time when there is heavy rainfall in summer and autumn.

4. Pest and disease control

Allium grandiflorum has very few diseases and pests. Common diseases and pests are rot and onion thrips. To prevent and control rot, you can use 600 times diluted 60% mancozeb wettable powder to soak the seeds for sterilization before planting. Onion thrips are prone to occur in dry weather. In severe cases in the later stages, the leaves will become twisted and yellow, leading to shrinkage and drooping. Pay attention to watering frequently to prevent excessive drought. 30% cypermethrin emulsifiable concentrate can be sprayed at a dilution of 2000-3000 times to control pests.

That’s it