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Complete guide to polka dot begonia care

If you’re after a spot of character, the polka dot begonia is a great place to start.

Close-up detail photo of a polka dot begonia leaf on a white studio background

The begonia maculata, also known as polka dot begonia, is a popular houseplant because of its striking foliage. We keep it easy and call our begonia, Mac. This plant features dark green leaves with white dots and maroon undersides, making it an eye-catching addition to any indoor space. However, like any other plant, the begonia maculata requires proper care to thrive. In this article, we'll cover everything you need to know to care for your polka dot begonia and keep it healthy and happy.

  • They tolerate slightly shady spaces, although they far prefer a spot that’s bright but out of direct sun.
  • They like their soil to stay moist but not soggy, so water them when the top inch of soil feels dry.
  • Give them a feed once per month in spring and summer and you might be rewarded with little white flowers.

About polka dot begonias

You may hear begonia and imagine the sweet little English garden plants, but there are actually over 2,000 different varieties of begonia. This one comes from Southeast Brazil, where it makes its home in rainforests. It’s not often you see a spotty plant, and this one is quite the show off.

A polka dot begonia in a light grey concrete decorative pot on a shelf in a bathroom

How much light does my polka dot begonia need?

A begonia maculata thrives in bright, indirect light. Placing it in direct sunlight can scorch its leaves, while low light can cause the plant to become leggy and weak. Pop your begonia maculata near a window that receives bright but filtered light - perhaps you have sheer curtains or some tall trees outside.

How often should I water my polka dot begonia?

Your polka dot begonia prefers to be kept slightly moist, but not wet. Overwatering can cause the roots to rot, while underwatering can cause the plant to wilt and die. Water your begonia maculata when the top inch of soil feels dry to touch. Use room temperature water, and make sure the water drains out of the pot to prevent waterlogging. If you're not sure how much to water your plant, it’s better to under-water than overwater. You can use the finger dip test to check.

Does my polka dot begonia need a humid environment?

A begonia maculata thrives in a really humid environment. If the air in your home is dry, consider using a humidifier or placing a tray of water near the plant to increase humidity levels. If you’re lucky enough to have a bright bathroom, that’s the perfect spot for a polka dot begonia. You can also mist the leaves of your begonia maculata with room temperature water once a week to increase humidity levels.

What’s the best temperature for my polka dot begonia?

Your begonia maculata prefers temperatures between 15-25°C. Try to avoid placing the plant near draughty windows or doors, as temperature fluctuations can cause stress which will harm the plant.

A polka dot begonia in a light grey concrete decorative pot on a shelf in a bedroom

Should I fertilise my polka dot begonia?

Give your begonia maculata a good feed during the growing season (spring and summer). Use a balanced, water-soluble fertiliser every two weeks to encourage healthy growth and vibrant foliage.

Do I need to prune my polka dot begonia?

Prune your polka dot begonia regularly to promote bushy growth and remove any dead or yellowing leaves. Use clean, sharp scissors to avoid damaging the plant, and be sure to sanitise your tools between uses to prevent the spread of disease. Simply snip off any leaves that look past their best.

Common polka dot begonia pests and diseases

The begonia maculata is relatively pest-resistant but it can still fall victim to common houseplant pests such as spider mites, mealybugs, and scale. Check your plant regularly for signs of pest infestation, such as webbing or sticky residue on the leaves. If you spot any pests, isolate your plant immediately and treat it with an insecticidal soap until the bugs are gone.

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