How to Grow and Care for Rex Begonias Indoors Begonia x rex-cultorum
Rex begonia houseplants, Begoniaxrex-cultorum, are living art – richly colored, dramatically patterned, vibrant, and perhaps shimmery, depending on which type you grow.
Contemplating their puckered, crinkly, whorled leaves can challenge a dour mood or your preconceptions about botanical shape and color.
I own several of these museum-quality indoor begonias, and I enjoy them so much I am willing to provide the moderate to high maintenance they need to thrive.
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Outside of USDA Hardiness Zones 10 to 12, rex begonias are commonly grown as houseplants that may spend the warm months outside.
They may also be grown outdoors as annuals. It can be tricky to provide the humidity they prefer and to deliver the specific amounts of light and water they require.
Are rex begonias easy to care for? Not really. Are they worth the extra effort? Absolutely.
But don’t take my word for it, or at least not yet. Let’s get to know this hybrid begonia variety better before you decide whether it’s the houseplant for you.
I’ll try to keep my gushing to a minimum as I share tips for growing and caring for rex begonias, but I can’t promise. Here’s what I’ll cover:
What Are Rex Begonias?Rex begonias are herbaceous hybrids most often grown indoors. They are hardy perennials suited to outdoor growth year-round only in USDA Hardiness Zones 10 to 12.
In this guide we’ll focus on growing this variety as a houseplant, whether you choose to move it indoors in the cool months or maintain it inside year round.
Rex begonias are renowned for their showy leaves. The blooms that
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