Choose any pot that has drainage holes. Begonias easily suffer from root and stem rot, so make sure they don’t get too cold or their roots don’t get soggy while sitting in still water![2] X Research source [3] X Research source Give small plants 1 inch (2. 5 cm) of space to grow until they fit a 6-inch pot. After that, you can upgrade your begonias’ pots a little more quickly, like moving them from an 8-inch pot to a 10 inches (25 cm) pot.
A mix with peat can keep you from overwatering your begonias. It will soak up extra water. This is great if you live somewhere hot. Horticultural grit will keep your plants from getting water-logged. It’s a type of potting mix with organic matter, like bark, that will air your begonias out.
Putting the bulb deeper than it was in its last pot promotes new bottom growth. Plus, stronger roots will form. [6] X Research source Packing potting mix around the roots removes air pockets so your begonias don’t dry out. Leave at least 0. 5 inches (1. 3 cm) of space when filling pots with begonia bulbs. You don’t want to fill your pot all the way to the top. A small gap makes sure nothing spills out when you water your begonias. [7] X Research source
During the winter, your begonias will need several more hours of direct sunlight.
After a few weeks, you can give your begonias more sunlight. Put your begonias under a tree or another spot with filtered light.
If it gets warm again outside during the day, you can bring your begonias back outside until it gets cold again.
If you see pests crawling on your plant’s stems or leaves, keep your begonias away from any of your other houseplants. You can use a shower head or a sink jet nozzle to rinse your begonias off.
