Choose the suckers: the best suckers to use are 1.8-2.1m in height and have thin, sword-shaped leaves, although smaller suckers should work well if the mother plant is healthy
If the sucker is still attached to a mother plant, remove it by cutting forcefully downward with a clean shovel. Include a significant portion of the underground base (corm) and its attached roots.
A rhizome (corm) without notable suckers can be chopped into pieces. Each piece with a bud will grow into a banana plant, but this will take longer than using a sucker.
Cut off any dead, insect-eaten, rotting or discolored sections of the plant. If most of the plant is affected, dispose of it away from other plants and find another planting material.
Cleaning banana Plant and planting :
Heat the water up to 50oC
Then after, remove all the fire and put a rhizome (corm) for 20 minutes
Fill the hole with loose, rich soil. Leave several centimeters (a few cm) of space at the top to encourage drainage.
The ideal soil acidity for bananas is between pH 5.5 and 7. Acidity pH 7.5 or higher can kill the plant.
Place the plant upright in the new soil. The plant supposed to be in the middle of the hole to a depth of 20 centimeters ( 20 cm)
Then cut the plant and leave the height of 20 centimeters ( 20cm)