How to grow wax begonia (Semperflorens) indoors

Durable blooming plants that provide Persistant color.

Semperflorens begonia (commonly called wax begonia) is one of the most popular bedding plants in the western world.

 The countless sides of these sturdy plants pour into the soil every spring, creating lush flower beds.

 The reason for this excessive use is clear. It is a durable, blooming plant that offers single or double flowering colors.

Most people think of these as outdoor plants only, but they actually make indoor plants well.

Wax begonias are not just annual. In fact, they are perennial shrubs that grow easily with wonderful sizes and flowers.

Conditions for growing wax begonias (Semperflorens)

These are sturdy plants that can do best in the following conditions:

  • Light: Wax begonias can grow under the sun except in the harshest climates. Give it as bright light as possible.
  • Water: After the first 1/2 inch of soil has dried, completely drain it by drinking water.
  • They benefit from relatively low humidity.
  • Temperature: Average to be warmed.
  •  Like all begonias, they don’t like cold water and can’t tolerate freezing, but they will thrive at 60sF.
  • Soil: Light, light and quickly draining soil.
  • Fertilizer: Use liquid fertilizer at a strength of 1/4 every week or 1/2 every 2 weeks.
  •  Use high phosphorus fertilizer for every third or fourth feeding.

wax Begonia blog
wax Begonia blog


Wax begonia is an F1 hybrid that is produced almost exclusively in large nurseries in huge quantities.

This plant is not produced exactly from seeds, but like many other begonias, it easily reproduces on leaf cuttings .

There are no flowers, but at least two nodes are cut, immersed in a moist potting soil mixture and placed in a warm, half-shaded place until new growths appear.

When you start growing the plant again, it can grow best in spring.


Wax begonias happily grow into small shrubs when they reach a maximum height of about 18 inches depending on the crop .

Like other begonias, they thrive when grown in a pot. You can expect the begonia to last a few years this way if you prtect it from sub zero tempretures

In most cases, splitting aging plants is better than struggling with sampling and repairing.

If you re-pot, do it in spring with a slightly larger pot with fresh, quick-draining and abundant organic potting soil.

Varieties of Wax Begonia

Almost all plants known today as wax begonias are hybrids produced from the same ancestors.

The basic ancestor was B.cucullata, which was once called B. semperflorens.

This plant has been extensively farmed over the years, and many of its ancestors are precisely known as Semperflorens Cultorum

. The physical properties of this plant depend on the breeder, but it has been hybridized in a variety of colors and heights.

B. schmidtiana is also included in the semperflorens group. According to the American Begonia Society, this velvety leafy is a small branchy plant.

Grower’s tips

Semperflorens begonia or wax begonia is not a difficult plant to grow and can be included in mass warehouses planted for bright indoor colors.

To keep the plant looking lively, pinch the old flowers and keep the plant without brown and old leaves.

Semperflorens Can suffer from powdery mildew on the leaves, so it should not be sprayed with particularly high humidity.

Established plants also require less water and can go for a long time between watering cycles.

When  watering, sprinkle with  water, then let the pot drain completely. Make sure they don’t sit in water that promotes root rot.

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