How To Care Begonia Rex. Always breathtaking to behold. Fill in the container with more fresh potting mix for the Rex Begonias gently firming the soil.
Its best to let Rex Begonias slightly dry out between waterings. Rex and other rhizomatous begonia During summer keep plants shaded and watered freely but with good drainage and high relative humidity humid atmosphere Do not wet the leaves or the crown During winter reduce watering allowing the surface of the compost to dry out before watering again. If this happens continue to water sparingly until spring when new leaves will re-appear.
Rich but open potting mix kept moist during growing season.
A good rule of thumb is to allow the top inch or so 25 cm to dry out and then water again. Begonia rex makes a mound of foliage up to 45cm high and 50cm across. 1242018 Once the Rex begonia starts growing again in spring fertilize with an all-purpose water-soluble houseplant fertilizer applied at quarter strength. Since you have to wait for the roots to dry go ahead and get the plant pot ready.