Begonia Flower Temperature. This category of begonias is winter-flowering. While most flowering plants require at least a half day of full sun begonias actually prefer growing in the shade and will bloom continuously from summer to fall.
An insulated but unheated attic or three-season porch may be cool enough. Also known as winter-flowering begonias Riegers are usually grown as houseplants. In most of the US however begonias are treated as annuals planted for a single growing season or indoor specimen plants.
Rex Begonias in particular are fuzzy when it comes to its humidity requirements so make sure to keep air humidity high while making sure not to encourage the growth of powdery mildew 6.
The optimum temperature for a plant is 18-22. 17062021 An advantage of growing begonia flowers in the ground in warm climates or indoors in temperate regions is their low maintenance. Garden Tools for Affordable Prices. Bright indirect light warm environment with temperatures between 22 and 12 degrees C humidity above 40 porous soil that is enriched with peat moss and perlite and judicious watering that prevents sitting in water.