By Christine Freeburn, Master Gardener
The choices for summer annuals seems to grow greater every year. Filler plants like geraniums, petunias, marigolds, impatiens are lovely, but the begonia has so many variations of shapes, sizes, colour, and sun requirements, they are worth a try in your hanging baskets or containers.
Begonia are generally easy care with no deadheading and different varieties can grow in sun or shade. Flowers are often smaller but there are lots on the plant. They often just fall off or can be pinched off quickly. Leaves come in many shapes and sizes, colours and textures. When you go into a garden centre, you need to know what type of begonia you are looking for.
Fibrous rooted types include the easy Dragon Wing variety which are great in window boxes and containers. They come in red, pink or white, grow about a foot tall and wide, and can take sun or part sun. There is a new variety called Canary Wing which has yellow leaves and prefers less sun.
Wax begonias Begonia semperflorens are usually sold in cell paks, prefer part shade, can have bronze or green thicker fleshy leaves and white, pink or red flowers. Often called bedding begonia, they are great in the garden as an alternative to impatiens.
Tuberous begonias include the Solenia type Begonia x tuberhybrida which can take full sun and come in a variety of colours from shades of pink to yellow and red. Great in hangers or containers.
Solina begonia
'Nonstop' and 'Illumination' are hybrid variety of tuberous begonia that will take the heat but want shade. They come in lovely shades of pink, red, yellow, peach or white. These also work well in containers and hangers.
Reiger begonias can produce double blooms, are more upright and also prefer shade.
Gryphon Begonia is a cane type begonia with stunning foliage and upright habit which will do well in part shade in the garden bed. Although the plant rarely flowers, the maple shaped leaves on a 2 foot plant looks great.
Rex Begonias have amazing furry leaves in many different shapes and colours. They do not want any sun and are often used as houseplants. Flowers are rare on these lovely specimens, but the leaves are the showstopper.
Rex begonia
And if you grew houseplants in the 70s, you might also remember the cute little indoor begonia called Strawberry Begonia Saxifraga stolonifera which grows similar to the spider plant having babies growing from trailing stems. These little houseplants are difficult to find but a nice addition to a houseplant collection.
Although begonias don't need constant deadheading like so many other annuals, removing spent blossoms will keep the plant looking fresh and encourage new blooms.
Soil should be well draining and evenly moist but don't over water as this can lead to root rot. Begonia stems are fleshy and brittle, and can break easily, so they don't do well in wind. Fertilizing for bloom and good health can be done weekly over the summer months.
http://www.missouribotanicalgarden.org/
https://www.thespruce.com/
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