Big, Beautiful Botanical Begonias

Few plant groups are as diverse and captivating as begonias.

With more than 2 000 species, this genus offers an astonishing range of shapes, textures and growth habits. The begonias we commonly see in garden centres, grown for their flowers, foliage or both, are only a small glimpse of what exists in the wild.

A collector’s dream

With the rise of indoor gardening and terrarium culture, begonias have stepped into the spotlight. Collectors are no longer satisfied with the ordinary. Instead, they search for the unusual, the rare and the truly extraordinary.

Some of these plants are so sought-after that they fetch remarkably high prices. For many enthusiasts, though, the real appeal lies in discovering something different. It could be a striking leaf pattern, an unexpected texture or a unique growth habit that sets a plant apart.

Begonias in the wild

Travelling through Thailand offers a rare opportunity to see begonias in their natural environment.

It is believed that more than 60 species grow there, with at least 24 found nowhere else in the world. Seeing them in their habitat highlights an important lesson. Understanding where a plant comes from makes all the difference when trying to grow it successfully at home.

Thailand’s climate is quite different from what many gardeners are used to. Rather than four distinct seasons, there are wet and dry periods. Temperatures remain fairly stable throughout the year, and begonias have adapted in fascinating ways to cope with these conditions.

Built to survive

Some species, like Begonia tanjiewhoeii, develop thick, fleshy leaves that store moisture during dry spells.

Others follow a completely different strategy. Species such as B. saxifragifolia, B. putii and B. curtisii retreat underground, surviving as small tubers until the rains return. During the dry season, they disappear completely, leaving behind bare rock where lush foliage once thrived.

It is a remarkable transformation. Landscapes that appear lifeless during the dry months suddenly burst into colour and texture when the rains arrive.

Jewels on stone

Much of Thailand’s begonia habitat is shaped by limestone, also known as karst rock, which forms the dramatic landscapes seen on many of the country’s islands.

Here, begonias cling to sharp, rugged surfaces and turn them into living displays. Their leaves shimmer in the soft forest light. Some have a metallic blue sheen, while others are dusted with silver speckles that catch the eye like tiny jewels.

One standout is Begonia saxifragifolia. Each plant produces a single maple-like leaf, and in large groups they create an almost surreal effect, as if the rocks themselves are alive.

Another fascinating species is Begonia pteridiformis. At first glance it looks more like a fern than a begonia, showing just how diverse and surprising this genus can be.

Something for everyone

Begonias hold a special place in the hearts of gardeners for good reason.

With new species still being discovered and breeders constantly developing exciting hybrids, there is truly a begonia for every taste. Whether you are drawn to bold foliage, delicate flowers or the thrill of collecting something rare, there is always something new to discover.