Ornithogalum caudatum, False Sea Onionis
This is a rather curious bulbous plant and unlike an true onion however, the bulb grows above ground, reaching up to 10 cm in diameter.  Incidentally, the “onions” are decidedly NON-edible!

Description: Ornithogalum caudatum, or False Sea Onion, is a rather curious bulbous plant and looks very similar to an onion. It a classic cryptophyte (with bulb-like stem) that dies back during the dry period of the Mediterranean climate.
Bulb: Large smooth, opalescent, pale apple-green, that sit on top of the medium and will reach up to 10 cm in diameter. When larger produce bulbils on their sides.
Leaves: Strap-like, semi-succulent and can grow very long under ideal circumstances up to 40 (100)cm in length, The leaves droop.
Flowers: Form a 70-90 cm flowering spike capped small, white fragrant flowers with green, central stripes. There may be as many as 50 to 100(-300) flowers per stalk.
Blooming Time: Usually flower from May to August.

Cultivation: It is an easy and adaptable plant to grow and it is well suited for containers growing happily in a pot for many years.  It makes a good but odd houseplant or specimen. Prefers some direct sun but will scorch in hot, sunny, dry locations. In the greenhouse, use a suffice cactus soil with some peat (a soil that retains water yet drains well). The plants are allowed to dry slightly in-between waterings. If the plants are allowed to dry too much, they will go dormant. During the winter months, the plants are allowed to go dormant and are stored in the cold storage until spring. Temperature: Reportedly hardy down to -5°C.

Propagation: Division, seeds, offsets (bulbils). Produces somatic embryos (bulbils) on the bulb scale tissue, visible as small bumps (pregnancies) on the surface of overlying bulb scales in mature specimens. These eventually fall off when outer scale layers disintegrate or split. The bulblets then root and establish new plantlets. Copious seed is also produced and germinate easily.  It is best to propagate seeds in the spring through summer in a mixture of moist peat and perlite. Cover the pot and plant with a plastic bag secured by a rubber band to prevent the moisture from escaping. Place in indirect sunlight or under a fluorescent light. Repot in its regular mix after it has been growing for a while. After dividing plant or removing offsets, pot it in its regular potting mix.

Warning: Most parts of the plant are considered highly toxic. Dermatitis is common in some people who handle the plants. The size and attractiveness of the little bulblets may pose a choking danger to children.

Ethnobotanical/Economic Uses: In its native habitat, crushed leaves are sometimes tied over cuts and bruises and said to have healing effects similar to aloe vera. Also used as cooked syrup with rock candy against colds.
 

Scientific name:  Ornithogalum caudatum (Aiton) Maire

Origin:  South Africa. Altitude (min/max): 0/300 m

Common English Names include: False Sea Onion, Pregnant Onion seeds Pregnant Onion, False Sea Onion German Onion

The pregnant part is owed to its strange distinction of producing babies on the bulb scales that are visible as small bumps on the surface. To show off the ‘pregnancies,’ occasionally remove the papery outer layers and drying leaves.