Gladioli

Gladioli

When and how to water

Gladioli are herbaceous plants with bulbous root, they bloom from mid-spring until the end of summer. The leaves are reminiscent of none other than a "short Roman sword". The gladiolus plant is rather bare in the lower part, but becomes rich and beautiful in the upper part, where large and colorful spikes group together. The flowers sometimes have different appearances and colors, since they are hybrid varieties of plants, obtained through crosses between different species. Watering must be discreet, a little more abundant in warm periods and during flowering. To make the plant more robust and luxuriant, mineralized liquid fertilizers can be added to the common waterings, which further favor the development of the corms and prolong the flowering state.


Cultivation and care

Gladioli grow pleasantly in any type of soil, even if they prefer a soft and neutral soil, with good drainage and properly fertilized with solid fertilizers. The gladiolus comes from a bulb or tuber that is usually buried in February but, for a later flowering, April or May is chosen. 8-10 cm deep furrows are dug if the soil is heavy, if on the contrary it is soft and loose, the furrows must be at least 12 cm deep. Between one bulb and another there must be a distance of at least 15 cm. The gladioli planted to embellish a flower bed are buried in groups of 6-7, while if they are used for borders, they are arranged in strips. Growth begins immediately after planting and, the more fertile the soil and the sunny area, the faster the vegetation will be and the faster the flowering will be.

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How and when to fertilize

The gladioli do not need particular attention, but since they bloom in the month of July, it is necessary to intervene with suitable fertilizers to strengthen the plant. The fertilizer can be of vegetable or animal origin. Before the plant blooms, it needs to be irrigated with liquid fertilizer for bulbous plants added to the water. The operation must be performed every fifteen days until the flowers explode in all their beauty, after which it is sufficient to continue with a normal watering. If you want to leave the bulbs in the ground, you need to buy those for "naturalization". In autumn they must be fertilized with a low nitrogen fertilizer, otherwise in summer the bulbs must be extracted from the ground, cleaned and stored until autumn to be subsequently replanted.


Gladioli: Diseases and remedies

The gladioli are affected by a multitude of diseases, to prevent the plant from dying it is necessary to observe every change carefully. If you notice a light and dark spot on the leaves, you need to reduce watering, eliminate stagnant water and if the plant lives indoors, ventilate the room. Gladioli are also affected by collar rot, caused by high temperatures, accompanied by high humidity. The leaves, on the other hand, are the favorite target of gray mold: a fungus that must be immediately "countered" with exclusive products before the damage is no longer curable. The flowers are affected by a variety of insects such as: spider mites, aphids, flies, bacterial scabies, which contrast with pesticides as soon as their presence is noticed.


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