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Soaking bulbs is not necessary. Fall bulbs should be planted as soon as the ground is cool usually, when the evening temperatures are constant between 40 to 50 degrees.
Small bulbs can develop or propagate a large bulb. If one or several moderate-sized bulbs form to replace the original bulb, they are called renewal bulbs. [7] Increase bulbs are small bulbs that develop either on each of the leaves inside a bulb, or else on the end of small underground stems connected to the original bulb. [7]
The bulbs are produced to satisfy the demand for bulbs for parks, gardens and as house plants, in addition to providing the bulbs necessary for the production of cut flowers. The international trade in cut flowers has a worldwide value of approximately 11,000 million Euros, which gives an idea of the economic importance of this activity.
Flowering plant bulbs are planted beneath the surface of the earth. The bulbs need some exposure to cold temperatures for 12 to 14 weeks in order to bloom. [1] Flower bulbs are generally planted in the fall in colder climates. The bulbs go dormant in the winter but they continue to absorb water and nutrients from the soil and they develop roots ...
The bulbs of Nerine species need a minimum of two years growth and development in order to produce their first flowers. The largest bulbs can give rise to two stems or more if they have been grown under suitable conditions. They are used as cut flowers as they can survive up to 14 days in a vase with water without showing any staining. [12]
O. umbellatum is a perennial herbaceous bulbous plant , dying back after flowering, to an underground storage bulb. The following year, it regrows from the often shallow rooted bulbs, which are ovoid with a membranous coat, [2] 15–25 millimetres (1 ⁄ 2 –1 inch) long and 18–32 mm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) in diameter.
Hyacinthus grows from bulbs, each producing around four to six narrow untoothed leaves and one to three spikes or racemes of flowers. In the wild species, the flowers are widely spaced, with as few as two per raceme in H. litwinovii and typically six to eight in H. orientalis which grows to a height of 15–20 cm (6–8 in).
Crinum asiaticum, commonly known as poison bulb, giant crinum lily, grand crinum lily, or spider lily, [2] is a plant species widely planted in many warmer regions as an ornamental. It is a bulb-forming perennial producing an umbel of large, showy flowers that are prized by gardeners. However, all parts of the plant are poisonous if ingested.