How To Look After Begonia Plants. Watering once a week should be enough and in the winter it needs even less. Check soil pH with a soil testing kit looking for an optimum level for begonias which do well in a slightly acidic soil with a pH between 6 and 7.
Begonia plants need a rich well-aerated soil that drains quickly. Feed tuberous begonias weekly with tomato feed in summer especially pot-grown plants. Care and Maintenance Of Begonia Plants Dont ever over water your begonia and dont water the leaves.
You may find them at the end of the stems as flowers begin to die.
Tubers are a thick underground part of a stem or rhizome and Begonia sizes are measured by the diameter of the tuber. Too much water can cause plants to turn brown and rot so allow them to dry out almost completely between waterings. Rich but open potting mix kept moist during growing season. If you want to give leaf propagation a go remove a leaf including its stem and then push the stem into a moist soil mix a rooting hormone on the buried end will increase your chances firming gently to keep everything anchored in place.