How to Grow Any Bulb in a Glass of Water

Wants to know Here’s how to grow any onion in a glass of water? It’s amazing and you don’t need a real garden to do it.

How to Grow Any Onion in a Glass of Water 1

With a few simple steps you can do it Grow each onion in water and enjoy the beautiful blooms indoors, no matter how small your space is. Store them on the windowsill or place them on top of the shelf – it’s up to you. You can even grow bulbs like the paperwhite daffodil in clumps in water in the same container for a more attractive centerpiece.

Why you should definitely do this

Because! Growing bulbs in water is a unique way to bring the magic of an outdoor flower garden indoors. In addition, other reasons are listed below:

1. Flowering all year round: With flower bulbs that grow in water, you are no longer tied to the seasons. You can grow them all year round.

2. Space Saving Activity: City dwellers and those with limited outdoor space can enjoy their delightful gardening activity this way. It is a perfect DIY for apartments, small houses or even offices.

3. Indoor Garden Art: How to transform window sills, tables and shelves into small, lively flower gardens.

4. Simple and straightforward: The process of growing flower bulbs in water is remarkably simple. It also offers beginners an easy introduction to the world of garden and plant care. You can even get kids involved!

Supplies are needed

  1. Pear: Choose a disease-free, healthy onion.
  2. Glass containers: A tall glass, mason jar, or even a special bulb vase.
  3. Water: Distilled water or tap water that has been left to stand for 24 hours to allow the chlorine to evaporate.
  4. Stones or pebbles: Optional for additional stability and decoration.
  5. Support operations: Wooden or metal stakes for tall flower bulbs.

How to Grow Any Onion in a Glass of Water – Step by Step Guide


  1. Check the light bulb: Make sure the bulb is tight and free of mold, rot or holes.
  2. Prepare the jar: Fill the bottom of the jar with stones or pebbles (if used) to increase stability.

Positioning the light bulb

  1. orientation: Place the onion with the pointed side up and the flat root side down.
  2. water level: Add water to the glass, making sure it only touches the base of the bulb. The roots must have access to water, but the bulb should not be submerged to avoid rot.

Placement and light

  1. Location: Place the jar in a well-lit place, but of course without direct sunlight, as this could heat the water and stress the bulbs.
  2. temperature: For optimal growth, aim for a consistent room temperature between 60 and 80°F.


  1. water level: Keep an eye on the water level and ensure it remains consistent.
  2. Water quality: Replace the water every week to prevent bacterial growth.
  3. Support: As the bulb grows, it may need support to keep it upright.

Expert tips

  1. oxygenation: Some experts suggest adding a tiny drop of hydrogen peroxide to the water to oxygenate it to promote root health.
  2. Scale up: If you are growing multiple bulbs, make sure each has enough room for root development in a larger container.
  3. Root rot: If you notice a foul smell or discoloration, it could be a sign of root rot. Replace the water and clean the glass immediately.

Best flower bulbs to grow in waterHow to Grow Any Onion in a Glass of Water 2

Although not all bulbs are suitable for this method, there are several types of plants and bulbs that thrive in water. Below are some of the easiest bulbs to grow and care for in water-based facilities:

1. Paperwhite Daffodil

  • Easy-care: Simply
  • Water requirements: Shallow water, roots submerged
  • lighting: Bright, indirect light
  • flowering time: 4-6 weeks after planting

2. Amaryllis

  • Easy-care: Moderate
  • Water requirements: Submerge the bulb halfway
  • lighting: Bright, indirect light
  • flowering time: 6-8 weeks after planting

3. Hyacinth

  • Easy-care: Moderate
  • Water requirements: Partial immersion with the base touching water
  • lighting: Bright light, tolerates partial shade
  • flowering time: 2-3 weeks after root development

4. Crocus

  • Easy-care: Simply
  • Water requirements: Shallow water, base touches water
  • lighting: Moderate to bright light
  • flowering time: 2-4 weeks after planting


  • Easy-care: Moderate
  • Water requirements: Base touches water, not submerged
  • lighting: Bright light
  • flowering time: 3-4 weeks after the cooling period

5. Freesia

  • Easy-care: Moderate
  • Water requirements: Base touches the water
  • lighting: Bright light
  • flowering time: 3-4 weeks after planting

Best types of vases, bowls and jars for growing bulbs in water

Choosing the right container plays a crucial role in the successful growth of plants and bulbs in water. Below are some of the best options, categorized by container types:


1. Hyacinth vases

  • Best for: Hyacinths, smaller bulbs
  • characteristics: Tapered neck to keep the bulb afloat

2. Clear glass cylindrical vases

  • Best for: Paperwhites, amaryllis
  • characteristics: Transparent for observing root growth, larger opening for larger bulbs

3. Bud vases

  • Best for: Smaller bulbs
  • characteristics: Small opening to hold the bulb or cutting securely

Glass bowls

  • Best for: Paperwhites, mixed bulbs
  • characteristics: Flat, wide opening to accommodate multiple light bulbs


1. Mason jars

  • Best for: Smaller bulbs, cuttings of spider plants or peace lilies
  • characteristics: Versatile, readily available and rustic appearance

2. Wine glasses

  • Best for: bulbs like crocus
  • characteristics: Elegance and style, with a narrow base to accommodate light bulbs

Important considerations

  • transparency: Clear containers and vases are often preferred for monitoring water levels and root growth.
  • material: Glass is generally better than plastic because of its style, sturdiness and transparency.
  • Opening size: Make sure the opening is large enough for the bulb, but not so wide that the bulb falls in.
  • depth: The container should be deep enough to hold sufficient water, but not so deep that the bulb is submerged.
  • stability: Make sure the container has a sturdy base to prevent tipping, especially for taller plants like amaryllis.

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