Seed Swaps

Pregnant onion  

Ornithogalum longibracteatum

  • 12 plantings
  • 1 for swap
  • 1 wanted
  • 1 stashed

'Pregnant onion' is a plant in the Ornithogalum genus with a scientific name of Ornithogalum longibracteatum.

Parts of plant are POISONOUS if ingested. Handling plant may cause skin irritation or allergic reaction. Do NOT eat.

The Pregnant Onion is a very easy plant to grow and will grow for any person who is willing to take the time to water it occasionally. Pregnant onions can be potted or planted outside. If you live in zone 9 or under you may want to bring you plant inside for the winter because, even though they are hardy down to 25°F (-4°C), they can perish if they are in the cold for too long. Usually kept as a houseplant.

The bulb sprouts long leaves. It produces a long stalk that juts up from the center of the bulb. The flowers are white, sometimes yellow, with a green stripe down the center.

Blooms appear in these approximate colours:   White.

Pregnant onion grows as an evergreen and is a flower / houseplant. Being an evergreen plant, it will keep its leaves throughout the year.

Pregnant onion is known for growing to a height of approximately 1.00 metres (3.25 feet). This plant tends to bloom in late spring.

South Africa is believed to be where Pregnant onion originates from.

Pregnant onion is known to be toxic to humans and/or animals, so be careful where you position and how you handle this plant.

Pregnant onion is normally quite a low maintenance plant and is normally very easy to grow - great for beginner gardeners!

This plant info is provided by the myfolia gardener's wiki. All details about Pregnant onion have been kindly provided by our members.

How to grow Pregnant onion

  • Full Sun

  • Low

Propagation is mainly by by budding off the parent bulb.

Use well draining soil such as cactus soil, or even just sand.2 Do not use anything that will stay too moist.

Plant in a location that enjoys full sun and remember to apply water fairly sparingly. Zone 9 to 11 are typically the USDA Hardiness Zones that are appropriate for this plant (although this can vary based on your microclimate). Try to keep the ph of your soil between the range of 6.1 and 7.8 as Pregnant onion likes to be in weakly acidic soil - weakly alkaline soil. Keep in mind when planting that Pregnant onion is thought of as half hardy, so remember to protect this plant from frosts and low temperatures.

See our list of companion Plants for Pregnant onion to see which plants you should plant in close proximity to encourage growth.

Growing Pregnant onion from seed

Transplanting Pregnant onion

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Pregnant onion is a half hardy plant.

Harvesting Pregnant onion

Small bulbs will form off the mother bulb, wait until the babies have at least one leaf and inch or two long before removing it to it’s own container.

How long does Pregnant onion take to grow?

These estimates for how long Pregnant onion takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.

Start logging and journaling your observations to participate!

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Pregnant onion Folklore & Trivia

Pregnant onion produces a chemical in it’s sap that discourages anything from eating it.1

Other names for Pregnant onion

False onion, False sea onion, German onion, Falsche meerzwiebel,

Ornithogalum caudatum

Misspellings: pregnent onion,

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